Electric Switch Mechanisms - Magnetrol International
Electric Switch Mechanisms - Magnetrol International
Electric Switch Mechanisms - Magnetrol International
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Installation and Operating Manual<br />
<strong>Electric</strong> <strong>Switch</strong><br />
<strong>Mechanisms</strong><br />
Series<br />
B, C, D, F,<br />
O, Q, S, U, W,<br />
and X<br />
with<br />
Aluminum,<br />
Carbon Steel,<br />
or<br />
Cast Iron<br />
Housings
Read this Manual Before Installing<br />
This manual provides information on <strong>Electric</strong> <strong>Switch</strong><br />
<strong>Mechanisms</strong>. It is important that all instructions are read<br />
carefully and followed in sequence. Detailed instructions<br />
are included in the Installation section of this manual.<br />
Conventions Used in this Manual<br />
Certain conventions are used in this manual to convey<br />
specific types of information. General technical material,<br />
support data, and safety information are presented in<br />
narrative form. The following styles are used for notes,<br />
cautions, and warnings.<br />
NOTES<br />
Notes contain information that augments or clarifies<br />
an operating step. Notes do not normally contain<br />
actions. They follow the procedural steps to which<br />
they refer.<br />
Cautions<br />
Cautions alert the technician to special conditions that<br />
could injure personnel, damage equipment, or reduce<br />
a component’s mechanical integrity. Cautions are also<br />
used to alert the technician to unsafe practices or the<br />
need for special protective equipment or specific<br />
materials. In this manual, a caution indicates a<br />
potentially hazardous situation which, if not avoided,<br />
may result in minor or moderate injury.<br />
WARNINGS<br />
Warnings identify potentially dangerous situations or<br />
serious hazards. In this manual, a warning indicates an<br />
imminently hazardous situation which, if not avoided,<br />
could result in serious injury or death.<br />
WARNING! Explosion hazard. Do not connect or<br />
disconnect equipment unless power has been switched off<br />
or the area is known to be non-hazardous.<br />
Low Voltage Directive<br />
For use in Installation Category II, Pollution Degree 2. If<br />
equipment is used in a manner not specified by manufacturer,<br />
protection provided by equipment may be<br />
impaired.<br />
Notice of Copyright and Limitations<br />
<strong>Magnetrol</strong> & <strong>Magnetrol</strong> logotype are registered trademarks<br />
of <strong>Magnetrol</strong> <strong>International</strong>. Copyright © 2012<br />
<strong>Magnetrol</strong> <strong>International</strong>. All rights reserved.<br />
Performance specifications are effective with date of issue<br />
and are subject to change without notice.<br />
<strong>Magnetrol</strong> reserves the right to make changes to the<br />
products described in this manual at any time without<br />
notice. <strong>Magnetrol</strong> makes no warranty with respect to the<br />
accuracy of the information in this manual.<br />
Warranty<br />
All <strong>Magnetrol</strong> mechanical level and flow controls are warranted<br />
free of defects in materials or workmanship for five<br />
full years from the date of original factory shipment.<br />
If returned within the warranty period; and, upon factory<br />
inspection of the control, the cause of the claim is<br />
determined to be covered under the warranty; then,<br />
<strong>Magnetrol</strong> will repair or replace the control at no cost to<br />
the purchaser (or owner) other than transportation.<br />
<strong>Magnetrol</strong> shall not be liable for misapplication, labor<br />
claims, direct or consequential damage or expense arising<br />
from the installation or use of equipment. There are no<br />
other warranties expressed or implied, except special<br />
written warranties covering some <strong>Magnetrol</strong> products.<br />
Quality Assurance<br />
The quality assurance system in place at <strong>Magnetrol</strong><br />
guarantees the highest level of quality throughout the<br />
company. <strong>Magnetrol</strong> is committed to providing full<br />
customer satisfaction both in quality products and<br />
quality service.<br />
The <strong>Magnetrol</strong> quality assurance<br />
system is registered to ISO 9001<br />
affirming its commitment to known<br />
international quality standards<br />
providing the strongest assurance of<br />
product/service quality available.
Table of Contents<br />
<strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
1.0 Reference Information.....................................................4<br />
1.1 Principle of Operation ..............................................4<br />
1.2 Operating Cycle........................................................4<br />
1.3 Description ...............................................................5<br />
1.3.1 Dry contact switches B, C, D, O, Q, S and U ...5<br />
1.3.2 Hermetically sealed switches F, W and X........5<br />
2.0 Installation.......................................................................6<br />
2.1 Replacing <strong>Switch</strong> Mechanism....................................6<br />
2.2 Replacing Dry Contact <strong>Switch</strong>es...............................7<br />
2.2.1 Series B, C, D, F, O, Q, S, U, W and X.........7<br />
2.3 Vibration Service Adjustment ...................................8<br />
3.0 Wiring .............................................................................9<br />
3.1 SPDT Terminal Connections....................................9<br />
3.1.1 Single float with one switch or<br />
single stage displacer.......................................9<br />
3.1.2 Single float with two switches or<br />
dual stage displacer.........................................9<br />
3.1.3 Single float with three switches or<br />
three stage displacer......................................10<br />
3.2 DPDT Terminal Connections.................................11<br />
3.2.1 Single float with one switch or<br />
single stage displacer.....................................11<br />
3.2.2 Single float with two switches or<br />
dual stage displacer.......................................11<br />
3.2.3 Three stage displacer ....................................12<br />
4.0 Preventative Maintenance..............................................13<br />
4.1 Inspect <strong>Switch</strong> <strong>Mechanisms</strong>.....................................13<br />
5.0 <strong>Switch</strong> Specifications .....................................................14<br />
6.0 Replacement <strong>Switch</strong> <strong>Mechanisms</strong>.................................15<br />
6.0.1 Magnet strength ...........................................15<br />
6.1 Yellow Dot Magnet Replacement <strong>Mechanisms</strong>........15<br />
6.1.1 Series B, C, D, F, O, Q, S, U, W and X.......15<br />
6.2 Red Dot Magnet Replacement <strong>Mechanisms</strong>............16<br />
6.2.1 Series B, C, F, U, W and X ..........................16<br />
7.0 <strong>Switch</strong> Housing Replacement Assemblies .....................17<br />
7.0.1 Aluminum housings .....................................17<br />
7.0.2 Cast iron housings........................................18<br />
7.0.3 Carbon steel housings...................................18<br />
7.1 Replacement Housing Kits......................................19<br />
7.1.1 Referred by eighth, ninth and tenth digit.....19<br />
7.1.2 Referred by description ................................19<br />
7.1.3 ATEX...........................................................19<br />
7.2 Replacement Gaskets and Hardware .......................20<br />
8.0 Manual Reset Option....................................................20<br />
8.1 Parts Breakdown and Identification.........................20<br />
8.2 Field Installation Instructions..................................21<br />
9.0 <strong>Switch</strong> and Housing Model Codes................................22<br />
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes .....22<br />
9.2 ATEX Enclosure Codes...........................................31
5<br />
Process<br />
Liquid<br />
4<br />
Rising Level<br />
Figure 1<br />
Rising Level<br />
1<br />
3<br />
2<br />
Pivot<br />
Return<br />
Spring<br />
Process<br />
Liquid<br />
Falling Level<br />
Figure 2<br />
Falling Level<br />
1.0 Reference Information<br />
1.1 Principle of Operation<br />
Figures 1 & 2 illustrate the simple, reliable operating principle<br />
of a float level switch. <strong>Switch</strong>ing action is obtained<br />
through the use of a magnetic sleeve (4) and a float (3),<br />
displacer or flow sensing element and a switching mechanism<br />
(2). These two basic component assemblies are separated<br />
by a non-magnetic, pressure tight enclosing tube (5).<br />
The switch (2) and magnet (1) are assembled to a mechanism<br />
with a swinging arm which operates on precision<br />
stainless steel pivots.<br />
1.2 Operating Cycle<br />
As level of a liquid in a vessel rises (Figure 1), the float<br />
rides on the liquid surface moving the magnetic sleeve<br />
upward in the enclosing tube and into the field of the<br />
switch mechanism magnet. As a result, the magnet is<br />
drawn in tightly to the enclosing tube moving the switch<br />
adjusting screw and allowing the activating arm of the<br />
snap switch to move, making or breaking the electrical<br />
circuit. As the liquid level recedes (Figure 2), the float and<br />
magnetic sleeve moves downward until the switch magnet<br />
releases and is drawn outward, away from the enclosing<br />
tube by a tension spring. This in turn allows the activating<br />
arm of the snap switch to move, thus reversing<br />
switch action.<br />
<strong>Switch</strong> mechanisms may include a single switch or multiple<br />
switches, depending on operational requirements and<br />
switching action desired.<br />
4 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
Figure 3<br />
Series B, C, D, O and Q Dry<br />
Contact <strong>Switch</strong>es<br />
Figure 4<br />
Series S<br />
Snap <strong>Switch</strong><br />
Figure 5<br />
Series F<br />
Hermetically Sealed <strong>Switch</strong><br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
1.3 Description<br />
<strong>Magnetrol</strong> level controls are available with a range of different<br />
switch mechanisms—each designed for specific service<br />
conditions. A brief description of the individual switch<br />
mechanisms and their applications are given below.<br />
1.3.1 Dry Contact <strong>Switch</strong>es B, C, D, O, Q, S and U<br />
• Series B switches are general purpose with a maximum<br />
liquid temperature rating of +250° F (+121° C), see<br />
Figure 3.<br />
• Series C switches are general purpose with a maximum<br />
liquid temperature rating of +450° F (+232° C), see<br />
Figure 3.<br />
• Series D switches are designed for DC current applications<br />
with a maximum liquid temperature rating of<br />
+250° F (+121° C), see Figure 3.<br />
• Series O switches are general purpose with a maximum<br />
liquid temperature rating of +300° F (+149° C), used only<br />
in model C10 and C15 units, see Figure 3.<br />
• Series Q switches are general purpose with a maximum<br />
liquid temperature rating of +250° F (+121° C), used only<br />
in model C10 and C15 units, see Figure 3.<br />
• Series S switches are general purpose with a maximum liquid<br />
temperature rating of +550° F (+288° C), or designed<br />
for DC current applications with a maximum liquid temperature<br />
of +250° F (+121° C), used only in model B40<br />
units, see Figure 4.<br />
• Series U switches have gold alloy contacts and are suitable<br />
for applications with a maximum liquid temperature of<br />
+250° F (+121° C).<br />
1.3.2 Hermetically Sealed <strong>Switch</strong>es F, W and X<br />
Hermetically sealed switches are for use in special applications<br />
where hermetically sealed contacts are required.<br />
• Series F switches are well suited for use in process temperatures<br />
up to +750° F (+399° C), see Figure 5.<br />
• Series W switches are suitable for applications with a<br />
maximum liquid temperature of +450° F (+232° C).<br />
• Series X switches have gold-plated contacts and are suitable<br />
for applications with a maximum liquid temperature of<br />
+450° F (+232° C).<br />
NOTE: See bulletin 42-694 for series HS & H1 hermetically<br />
sealed switches.<br />
5
Figure 6<br />
Mounting Screw<br />
Figure 7<br />
Baffle Plate Screw<br />
Baffle Plate Screw<br />
2.0 Installation<br />
2.1 Replacing <strong>Switch</strong> Mechanism<br />
Caution: Before attempting to remove a switch mechanism, be certain<br />
to pull disconnect switch or otherwise assure that<br />
electrical circuit through control is de-energized.<br />
1. Disconnect wiring from supply side of terminal block<br />
on switch mechanism. Note and record lead wire<br />
terminal locations.<br />
2. Loosen screw in split mounting clamp until mechanism<br />
slides freely on enclosing tube, refer to Figure 6.<br />
3. Remove small round head screw securing lower switch<br />
mechanism to baffle plate, refer to Figure 7.<br />
4. Slide switch mechanism off of enclosing tube. If mechanism<br />
is to be reused, ensure that it is placed on a clean surface,<br />
free of metallic particles that may be attracted to the<br />
switch magnet.<br />
5. Loosen mounting screw so that switch frame will fit over<br />
e-tube. Install switch mechanism by sliding it over the<br />
enclosing tube. Slide mechanism down until the bottom of<br />
the frame and terminal block are resting on the baffle<br />
plate. The baffle plate should be resting on the hub of the<br />
housing base.<br />
6. Install and tighten baffle plate screw so that the switch<br />
mechanism may not be separated from the baffle plate.<br />
Tighten the mechanism mounting screw so that the mechanism<br />
is firmly clamped to the enclosing tube.<br />
7. Swing magnet assembly in and out by hand, checking<br />
carefully for any signs of binding.<br />
8. Reattached supply-side wiring to the terminal block and<br />
check switch function by varying liquid level in the vessel.<br />
6 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
Figure 8<br />
Dry Contact <strong>Switch</strong> Mechanism<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
Adjusting<br />
Screw<br />
Mounting<br />
Screws<br />
2.2 Replacing Dry Contact <strong>Switch</strong>es<br />
2.2.1 Series B, C, D, F, O, Q, S, U, W and X<br />
1. Disconnect control from power supply.<br />
2. Disconnect switch leads from terminal block. Note and<br />
record terminal connections of switch to be replaced.<br />
3. Remove two mounting screws holding existing switch,<br />
refer to Figure 8.<br />
4. Remove existing switch and install replacement switch in<br />
the same position, tightening mounting screws securely.<br />
NOTE: For proper operation of the replacement switch, it must actuate<br />
in the middle portion of the pivoted magnet’s swing.<br />
5. Check switch action and adjust as follows:<br />
a. Slowly rotate the pivoted magnet by hand, back and<br />
forth through its angle of swing, listening closely for the<br />
actuating click of the switch in each direction.<br />
b. Check to see if there is equal overtravel of magnet in its<br />
swing after the switch click in either direction.<br />
c. If switch actuation is not correct, change adjustment of<br />
actuating screw using a 1 ⁄16" hexagon key wrench, refer to<br />
Figure 8.<br />
NOTE: If a single switch is being replaced on a DPDT mechanism,<br />
lever of second switch must be depressed and held to allow<br />
for the audible adjustment of new switch, as described above.<br />
d. With new switch in adjustment, release lever of second<br />
switch and perform fine-tuning of both switches to<br />
provide simultaneous actuation (clicks).<br />
6. Reconnect power supply and test switch action by varying<br />
liquid level in the vessel or by “gently blowing down”<br />
float chamber.<br />
7
Vessel<br />
Baffle plate<br />
Direction of<br />
vibration<br />
Baffle plate<br />
Direction of vibration<br />
Incorrect<br />
Correct<br />
Swing of magnet<br />
Figure 9<br />
Rotation of <strong>Switch</strong><br />
Mechanism in Vibration<br />
Frame mounting screw<br />
2.3 Vibration Service Adjustment<br />
Level controls are frequently used in applications where<br />
vibration is encountered, such as on scrubbers or compressors.<br />
<strong>Switch</strong> mechanisms may require repositioning to<br />
prevent unwanted magnet movement. This position is<br />
usually best at right angles to the direction of vibration.<br />
The direction of vibration may be determined by the<br />
arrangement of connections to the vessel or the vessels<br />
mounting method. Accordingly, the vibration will tend to<br />
be in one direction only.<br />
Upon determining the vibration direction, switch mechanism(s)<br />
may be rotated from an incorrect position (as<br />
shown in Figure 9, illustration is shown as looking at a<br />
control from above), to a correct position as follows:<br />
Caution: Before attempting to remove a switch mechanism, be certain<br />
to pull disconnect switch or otherwise assure that<br />
electrical circuit through control is de-energized.<br />
1. Disconnect control from power supply.<br />
2. Loosen screw in split mounting clamp until mechanism<br />
turns freely on enclosing tube, refer to Figure 6 on page 6.<br />
3. Rotate entire mechanism and bottom baffle plate together<br />
to the correct position.<br />
Caution: Be certain power supply wires retain some slack at new<br />
position. Do not pull wires taut.<br />
NOTE: Amount of rotation required will vary with each installation and<br />
may not be as much as shown in illustration.<br />
4. Check action of switch magnet at new position. When<br />
magnet vibrates from side to side, instead of front to back,<br />
correct position has been attained.<br />
5. Tighten clamp screw on switch mechanism.<br />
6. Reconnect power supply, and test switch action under<br />
operating conditions.<br />
8 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
Load<br />
Close on Low Level (NC)<br />
Common (C)<br />
Close on High Level (NO)<br />
Load<br />
Figure 10<br />
Single Float with One <strong>Switch</strong><br />
or Single Stage Displacer<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
4<br />
5<br />
6<br />
Internal<br />
Circuit<br />
3.0 Wiring<br />
Circuits shown are for direct-acting level switches and are<br />
reversed in side mounting float-in-tank models, which<br />
utilize a reversing float pivot.<br />
NOTE: See bulletin 42-694 for wiring diagrams for “HS” Series<br />
hermetically sealed switches.<br />
3.1 SPDT Terminal Connections<br />
3.1.1 Single float with one switch or single stage displacer<br />
1. Rising level closes contacts 5 & 6, see Figure 10.<br />
2. Falling level closes contacts 4 & 5.<br />
3. Wiring Diagram is reversed (high level actuation becomes<br />
low level actuation, etc.) when this switch mechanism is<br />
used on side mounted float switches employing a reversing<br />
pivot (Models B40, T52, T62, T63, etc.).<br />
3.1.2 Single float with two switches or dual stage displacer<br />
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure 11.<br />
2. Falling level closes contacts 4 & 5 and 1 & 2.<br />
3. Wiring diagram is reversed (high level actuation becomes<br />
low level actuation, etc.) when this switch mechanism is<br />
used on side mounted float switches employing a reversing<br />
pivot (Models B40, T52, T62, T63, etc.).<br />
4. On units with tandem floats, the top float operates the<br />
bottom mechanism while the bottom float actuates the<br />
top mechanism.<br />
Upper stage operates<br />
upper switch mechanism<br />
Load<br />
Load<br />
Close on Low Level (NC)<br />
Common (C)<br />
Close on High Level (NO)<br />
Lower stage operates<br />
lower switch mechanism<br />
Load<br />
Close on Low Level (NC)<br />
Common (C)<br />
Close on High Level (NO)<br />
Load<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
Assem.<br />
A<br />
Assem.<br />
B<br />
Figure 11<br />
Single Float with Two <strong>Switch</strong>es<br />
or Dual Stage Displacer<br />
Internal<br />
Circuit<br />
Internal<br />
Circuit<br />
9
3.1.3 Single float with three switches or<br />
three stage displacer:<br />
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure 12.<br />
2. Falling level closes contacts 4 & 5 and 1 & 2.<br />
3. Unit is shipped with switches positioned for proper<br />
function. Do not change switch spacing.<br />
Upper stage operates<br />
upper switch mechanism<br />
Load<br />
Close on Low Level (NC)<br />
Common (C)<br />
Close on High Level (NO)<br />
Load<br />
Middle stage operates<br />
middle switch mechanism<br />
Load<br />
Close on Low Level (NC)<br />
Common (C)<br />
Close on High Level (NO)<br />
Load<br />
Lower stage operates<br />
lower switch mechanism<br />
Load<br />
Close on Low Level (NC)<br />
Common (C)<br />
Close on High Level (NO)<br />
Load<br />
10 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
4<br />
5<br />
6<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
Assem.<br />
B<br />
Assem.<br />
A<br />
Assem.<br />
B<br />
Figure 12<br />
Single Float with Three <strong>Switch</strong>es<br />
or Three Stage Displacer<br />
Internal<br />
Circuit<br />
Internal<br />
Circuit<br />
Internal<br />
Circuit
Load<br />
Load<br />
Internal Circuit<br />
(Left <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
4<br />
5<br />
6<br />
Figure 13<br />
Single Float with One <strong>Switch</strong><br />
or Single Stage Displacer<br />
1<br />
2<br />
3<br />
Internal Circuit<br />
(Right <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
3.2 DPDT Terminal Connections<br />
3.2.1 Single float with one switch or single stage displacer<br />
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure13.<br />
2. Falling level closes contacts 4 & 5 and 1 & 2.<br />
3. Double pole action is obtained by simultaneous operation<br />
of the right and left side single pole double throw switches.<br />
4. Wiring diagram is reversed (close on high becomes close<br />
on low, etc.) when this switch mechanism is used on side<br />
mounted float switches employing a reversing pivot.<br />
(Models B40, T52, T62, T63, etc.)<br />
3.2.2 Single float with two switches or dual stage displacer<br />
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure 14.<br />
2. Falling level closes contacts 4 & 5 and 1 & 2.<br />
3. Double pole action is obtained by simultaneous operation<br />
of the right and left side single pole switches.<br />
4. Wiring diagram is reversed (close on high becomes close<br />
on low, etc.) when this switch mechanism is used on side<br />
mounted float switches employing a reversing pivot.<br />
(Models B40, T52, T62, T63, etc.)<br />
5. On units with tandem floats, the top float operates the<br />
bottom mechanism while the bottom float actuates the<br />
top mechanism.<br />
Load<br />
Load<br />
Lower stage operates lower switch mechanism<br />
Load<br />
Load<br />
Internal Circuit<br />
(Left <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Upper stage operates upper switch mechanism<br />
Load<br />
Load<br />
Internal Circuit<br />
(Left <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
4<br />
5<br />
6<br />
4<br />
5<br />
6<br />
1<br />
2<br />
3<br />
1<br />
2<br />
3<br />
Internal Circuit<br />
(Right <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Internal Circuit<br />
(Right <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Figure 14<br />
Single Float with Two <strong>Switch</strong>es or Dual Stage Displacer<br />
Load<br />
Load<br />
Load<br />
Load<br />
11
3.2.3 Three Stage Displacer<br />
Load<br />
Load<br />
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure 15.<br />
2. Falling level closes contacts 4 & 5 and 1 & 2.<br />
3. Double pole action is obtained by simultaneous operation<br />
of the right and left side single pole switches.<br />
Load<br />
Load<br />
Load<br />
Load<br />
Upper stage operates<br />
upper switch mechanism<br />
Internal Circuit<br />
(Left <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Middle stage operates<br />
middle switch mechanism<br />
Internal Circuit<br />
(Left <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Lower stage operates<br />
lower switch mechanism<br />
Internal Circuit<br />
(Left <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Internal Circuit<br />
(Right <strong>Switch</strong>)<br />
12 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
4<br />
5<br />
6<br />
4<br />
5<br />
6<br />
4<br />
5<br />
6<br />
Figure 15<br />
Three Stage Displacer<br />
1<br />
2<br />
3<br />
1<br />
2<br />
3<br />
1<br />
2<br />
3<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Internal Circuit<br />
(Right <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Internal Circuit<br />
(Right <strong>Switch</strong>)<br />
Close on high level (NO)<br />
Common (C)<br />
Close on low level (NC)<br />
Load<br />
Load<br />
Load<br />
Load<br />
Load<br />
Load
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
4.0 Preventative Maintenance<br />
Inspect switch mechanisms, terminals and connections<br />
regularly. Proof test interval to be determined by application<br />
requirements (required reliablity, operating conditions,<br />
site requirements, etc.).<br />
4.1 Inspect <strong>Switch</strong> <strong>Mechanisms</strong>, Terminals<br />
and Connections<br />
1. Dry contact switches should be inspected for excessive<br />
wear on actuating lever or misalignment of adjustment<br />
screw at point of contact between screw and lever. Such<br />
wear can cause false switch actuating levels.<br />
2. DO NOT operate your control with defective or maladjusted<br />
switch mechanisms.<br />
3. Level controls may sometimes be exposed to excessive<br />
heat or moisture. Under such conditions, insulation on<br />
electrical wiring may become brittle, eventually breaking<br />
or peeling away. The resulting “bare” wires can cause<br />
short circuits.<br />
NOTE: Check wiring carefully and replace at the first sign of brittle<br />
insulation.<br />
4. Vibration may sometimes cause terminal screws to loosen.<br />
Check all terminal connections to be certain that screws<br />
are tight.<br />
NOTE: Spare switches should be kept on hand at all times.<br />
13
5.0 <strong>Switch</strong> Specifications<br />
RATING<br />
SWITCH SWITCH PROCESS<br />
SERIES TYPE TEMP. RANGE➀ LOAD Volts AC Volts DC<br />
° F (° C) 120 240 480 24 120 240<br />
-40 to +250 Non-Inductive Amp 15.00 15.00 15.00 6.00 0.50 0.25<br />
B Snap (-40 to +121) Inductive Amp 15.00 15.00 15.00 5.00 0.05 0.03<br />
1 1 Horsepower<br />
⁄8 ⁄4 — — — —<br />
-40 to +450<br />
Non-Inductive Amp 15.00 15.00 15.00 10.00 1.00 0.50<br />
C Snap<br />
(-40 to +232)<br />
Inductive Amp 15.00 15.00 15.00 5.00 0.50 —<br />
1 1 Horsepower<br />
⁄10 ⁄6 — — — —<br />
D Snap<br />
F<br />
(followed Hermetic<br />
by letter)<br />
F<br />
(followed Hermetic<br />
by number)<br />
Non-Inductive Amp 10.00 — — 10.00 10.00 1.50 min.<br />
3.00 max.<br />
Inductive Amp 3.80 — — — 2.20 —<br />
Horsepower 1<br />
⁄8 — — — 1<br />
⁄8 —<br />
Resistive Amp 2.50 — — 4.00 ➁ 0.30 —<br />
Inductive Amp 2.50 — — 2.00 ➁ 0.10 —<br />
Resistive Amp 1.00 — — 15.00 ➁ — —<br />
Inductive Amp 1.00 — — 10.00 ➁ — —<br />
-40 to +450 Non-Inductive Amp 15.00 15.00 15.00 — 1.00 0.50<br />
O Snap (-40 to +232) Inductive Amp<br />
Horsepower<br />
15.00<br />
1<br />
⁄10<br />
15.00<br />
1<br />
⁄6<br />
15.00<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
-40 to +250 Non-Inductive Amp 15.00 15.00 15.00 6.00 0.50 0.25<br />
Q Snap (-40 to +121) Inductive Amp 15.00 15.00 15.00 5.00 0.05 0.30<br />
1 1 Horsepower<br />
⁄8 ⁄4 — — — —<br />
SA<br />
SD<br />
SK<br />
SN<br />
-40 to +250<br />
(-40 to +121)<br />
-50 to +750<br />
(-46 to +399)<br />
-50 to +250<br />
(-46 to +121)<br />
-40 to +550 Non-Inductive Amp 15.00 15.00 15.00 — 1.00 0.50<br />
Snap (-40 to +288) Inductive Amp<br />
Horsepower<br />
15.00<br />
1<br />
⁄10<br />
15.00<br />
1<br />
⁄6<br />
15.00<br />
—<br />
—<br />
—<br />
0.50<br />
—<br />
—<br />
—<br />
SB<br />
SE<br />
SL Snap<br />
-40 to +250<br />
(-40 to +121)<br />
Non-Inductive Amp<br />
Inductive Amp<br />
10.00<br />
3.80<br />
—<br />
—<br />
—<br />
—<br />
10.00<br />
—<br />
10.00<br />
2.20<br />
1.50 min.<br />
3.00 max.<br />
—<br />
SO Horsepower 1<br />
⁄8 — — — 1<br />
⁄8 —<br />
(X) B<br />
(x=gold<br />
contacts)<br />
(X) F<br />
(x=gold<br />
contacts)<br />
(X) HS<br />
(x=gold<br />
contacts)<br />
U<br />
W<br />
X<br />
Snap<br />
Gold<br />
Contacts<br />
Hermetic<br />
Snap Gold<br />
Contacts<br />
Hermetic<br />
Snap Gold<br />
Contacts<br />
Snap Gold<br />
Contacts<br />
Hermetic<br />
Snap<br />
Hermetic<br />
Snap Gold<br />
Contacts<br />
-40 to +250<br />
(-40 to +121)<br />
-50 to +750<br />
(-46 to +399)<br />
-50 to +550<br />
(-46 to +288) ➂<br />
-40 to +250<br />
(-40 to +121)<br />
-50 to +450<br />
(-46 to +232)<br />
-50 to +450<br />
(-46 to +232)<br />
Non-inductive<br />
Inductive<br />
Non-inductive<br />
Inductive<br />
Non-inductive<br />
Inductive<br />
Non-inductive Amp<br />
Inductive Amp<br />
Horsepower<br />
Non-inductive Amp<br />
Inductive Amp<br />
Horsepower<br />
Non-inductive Amp<br />
Inductive Amp<br />
Horsepower<br />
➀ Process temperatures based on +100° F (+38° C) ambient temperature.<br />
➁ 28 VDC<br />
➂ On steam applications, temperature down-rated to +400° F (+204° C) at +100° F (+38° C) ambient.<br />
14 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
1.00<br />
1.00<br />
—<br />
—<br />
1.00<br />
—<br />
1.00<br />
—<br />
—<br />
1.00<br />
—<br />
—<br />
0.50<br />
0.15<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
1.00<br />
0.80<br />
—<br />
0.50<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
1.00<br />
0.25<br />
2.00<br />
1.00<br />
—<br />
—<br />
—<br />
3.00 ➁<br />
—<br />
—<br />
0.50<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
1.00<br />
1.00<br />
—<br />
0.50<br />
—<br />
—<br />
0.50<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
0.50<br />
—<br />
—
6.1 Yellow Dot Magnet Replacement <strong>Mechanisms</strong><br />
6.1.1 Series B, C, D, F, O, Q, S, U, W & X – Yellow<br />
<strong>Switch</strong><br />
8th & 9th<br />
10th Digit<br />
E, F, Y, M, W, Q, B, S, K<br />
<strong>Switch</strong><br />
Series Contacts Quantity<br />
Digit Bottom Mech Middle Mech Top Mech Only<br />
B<br />
SPDT<br />
1<br />
2<br />
3<br />
BA, BK<br />
BB, BL<br />
BC, BM<br />
089-7401-104<br />
N/A<br />
089-7401-103<br />
N/A<br />
089-7401-104 089-7101-020<br />
DPDT<br />
1<br />
2<br />
BD, BN<br />
BE, BO<br />
089-7401-122 N/A<br />
N/A<br />
089-7401-122<br />
C<br />
SPDT<br />
1<br />
2<br />
3<br />
CA, CK<br />
CB, CL<br />
CC, CM<br />
089-7401-110<br />
N/A<br />
089-7401-109<br />
N/A<br />
089-7401-110 089-7101-022<br />
DPDT<br />
1<br />
2<br />
CD, CN<br />
CE, CO<br />
089-7401-125 N/A<br />
089-7401-125<br />
D<br />
SPDT<br />
1<br />
2<br />
3<br />
DA, DK<br />
DB, DL<br />
DC, DM<br />
089-7401-106<br />
N/A<br />
089-7401-105<br />
N/A<br />
089-7401-106 089-7101-024<br />
DPDT<br />
1<br />
2<br />
DD, DN<br />
DE, DO<br />
089-7401-123 N/A<br />
N/A<br />
089-7401-123<br />
F<br />
SPDT<br />
DPDT<br />
1<br />
2<br />
1<br />
2<br />
FA, FK<br />
FB, FL<br />
FD, FN<br />
FE, FO<br />
089-7401-095<br />
089-7401-098<br />
N/A<br />
N/A<br />
N/A<br />
089-7401-096<br />
N/A<br />
089-7401-098<br />
089-7101-041<br />
O<br />
SPDT<br />
DPDT<br />
3<br />
3<br />
OC, OM<br />
OE, OK<br />
089-7401-110<br />
089-7401-125<br />
089-7401-109<br />
089-7401-125<br />
089-7401-110<br />
089-7401-125<br />
089-7101-022<br />
Q<br />
SPDT<br />
DPDT<br />
3<br />
3<br />
QC, QM<br />
QE, QK<br />
089-7401-104<br />
089-7401-122<br />
089-7401-103<br />
089-7401-122<br />
089-7401-104<br />
089-7401-122<br />
089-7101-020<br />
S<br />
SPDT<br />
DPDT<br />
1<br />
1<br />
SA, SK<br />
SD, SN<br />
089-7401-126<br />
089-7401-128<br />
N/A 089-7101-022<br />
S (DC volt)<br />
SPDT<br />
DPDT<br />
1<br />
1<br />
SB, SL<br />
SE, SO<br />
089-7401-129<br />
089-7401-127<br />
N/A 089-7101-024<br />
Continued on next page.<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
6.0 Replacement <strong>Switch</strong> <strong>Mechanisms</strong><br />
6.0.1 Magnet strength<br />
<strong>Switch</strong> mechanisms are provided with different strength magnets<br />
as determined by the characteristics of the level switch. A<br />
red, red/yellow or yellow dot is visible on each magnet. When<br />
ordering replacement switch mechanisms, be certain to determine<br />
the color dot on the magnet. For these types of switches,<br />
the tenth digit of the model number identifies the magnet<br />
used on the control. The correct magnet dot color may be<br />
chosen by finding the tenth digit of your model number at<br />
the top of the chart. Any model numbers preceded with an<br />
“X” are specially modified controls. Contact the factory for<br />
replacement part numbers.<br />
15
6.1.1 Series B, C, D, F, O, Q, S, U, W & X – Yellow (cont.)<br />
<strong>Switch</strong><br />
Series Contacts Quantity<br />
U<br />
W<br />
X<br />
10th Digit<br />
<strong>Switch</strong><br />
8th & 9th<br />
G, H, R, D, V, P, A, T, J<br />
Series Contacts Quantity Digits Bottom Mech Middle Mech Top Mech<br />
B<br />
SPDT<br />
1<br />
2<br />
3<br />
BA, BK<br />
BB, BL<br />
BC, BM<br />
089-7401-102<br />
N/A<br />
089-7401-101<br />
N/A<br />
089-7401-102<br />
DPDT<br />
1<br />
2<br />
BD, BN<br />
BE, BO<br />
089-7401-121 N/A<br />
N/A<br />
089-7401-121<br />
C<br />
SPDT<br />
1<br />
2<br />
3<br />
CA, CK<br />
CB, CL<br />
CC, CM<br />
089-7401-108<br />
N/A<br />
089-7401-107<br />
N/A<br />
089-7401-108<br />
F<br />
U<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
6.2 Red Dot Magnet Replacement <strong>Mechanisms</strong><br />
6.2.1 Series B, C, F, U, W & X – Red, Red/Yellow<br />
DPDT<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
8th & 9th<br />
Digits<br />
10th Digit<br />
E, F, Y, M, W, Q, B, S, K<br />
Bottom Mech Middle Mech Top Mech<br />
1 UA, UK, UU 047-5534-001 N/A N/A<br />
2 UB, UL, UV 047-5534-001 047-5535-001 N/A<br />
3 UC, UM, UW 047-5534-001 047-5535-001 047-5534-001<br />
1 UD, UN, UX 047-6520-001 N/A N/A<br />
2 UE, UO, UY 047-6520-001 047-6520-001 N/A<br />
1 WA, WK, WU 089-7410-004 N/A N/A<br />
2 WB, WL, WV 089-7410-004 089-7410-003 N/A<br />
3 WC, WM, WW 089-7410-004 089-7410-003 089-7410-004<br />
1 WD, WN, WX 089-7410-005 N/A N/A<br />
2 WE, WO, WY 089-7410-005 089-7410-005 N/A<br />
1 XA, XK, XU 089-7412-004 N/A N/A<br />
2 XB, XL, XV 089-7412-004 089-7412-003 N/A<br />
3 XC, XM, XW 089-7412-004 089-7412-003 089-7412-004<br />
1 XD, XN, XX 089-7412-005 N/A N/A<br />
2 XE, XO, XY, X4 089-7412-005 089-7412-005 N/A<br />
1 CD, CN<br />
N/A<br />
089-7401-124 N/A<br />
2 CE, CO 089-7401-124<br />
1<br />
2<br />
FA, FK<br />
FB, FL<br />
089-7401-093<br />
N/A<br />
089-7401-094<br />
1<br />
2<br />
FD, FN<br />
FE, FO<br />
089-7401-097<br />
N/A<br />
N/A<br />
089-7401-097<br />
1 UA, UK, UU 047-5533-001 N/A N/A<br />
2 UB, UL, UV 047-5533-001 047-5536-001 N/A<br />
3 UC, UM, UW 047-5533-001 047-5536-001 047-5533-001<br />
1 UD, UN, UX 047-6519-001 N/A N/A<br />
2 UE, UO, UY 047-6519-001 047-6519-001 N/A<br />
<strong>Switch</strong> Only<br />
037-4630-001<br />
037-9101-001<br />
037-9102-001<br />
<strong>Switch</strong> Only<br />
089-7101-020<br />
089-7101-022<br />
089-7101-041<br />
037-4630-001<br />
Continued on next page.<br />
16 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
6.2.1 Series B, C, F, U, W & X – Red, Red/Yellow (cont.)<br />
<strong>Switch</strong><br />
Series Contacts Quantity<br />
W<br />
X<br />
<strong>Switch</strong> Assembly<br />
Patent Label<br />
Lockwasher<br />
Ground Screw<br />
Housing Base<br />
Breather Drain<br />
(optional)<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
Figure 16<br />
Aluminum Housing Assembly<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
Enclosing Tube Assembly<br />
Set Screw<br />
Set Screw<br />
O-ring<br />
Enclosing Tube Assembly<br />
Baffle Plate<br />
7.0 <strong>Switch</strong> Housing Replacement<br />
Assemblies<br />
Housing Cover<br />
Gasket<br />
Pipe Plug<br />
8th & 9th<br />
Digits<br />
When ordering replacement parts for an existing<br />
<strong>Magnetrol</strong> instrument, please specify:<br />
1. Model and serial numbers of control.<br />
2. Description and part number of replacement kit.<br />
The proper replacement switch housing kit and parts can<br />
be determined by the last three characters of the model<br />
number. In section 6.1.1 on page 18, locate the eighth and<br />
ninth digits of your model number at the left side of the<br />
chart. Follow the appropriate row across the page while<br />
locating the tenth digit of your model number at the top<br />
of the chart. In section 6.1.2 on page 18, the chart lists the<br />
replacement housing kits according to description.<br />
7.0.1 Aluminum Housings<br />
10th Digit<br />
G, H, R, D, V, P, A, T, J<br />
Bottom Mech Middle Mech Top Mech<br />
1 WA, WK, WU 089-7410-002 N/A N/A<br />
2 WB, WL, WV 089-7410-002 089-7410-001 N/A<br />
3 WC, WM, WW 089-7410-002 089-7410-001 089-7410-002<br />
1 N/A<br />
2 N/A<br />
N/A<br />
1 XA, XK, XU 089-7412-002 N/A N/A<br />
2 XB, XL, XV 089-7412-002 089-7412-001 N/A<br />
3 XC, XM, XW 089-7412-002 089-7412-001 089-7412-002<br />
1 N/A<br />
2 N/A<br />
N/A<br />
<strong>Switch</strong> Only<br />
089-7411-001<br />
089-7413-001<br />
Die cast aluminum TYPE 4X housing replacements are<br />
available for general purpose or weatherproof installations.<br />
Explosion proof TYPE 4X/7/9 and Class I, Div 1,<br />
Group B housing replacements are available for hazardous<br />
atmosphere locations. Die cast aluminum housings are finished<br />
with a baked-on polyester powder coat paint.<br />
NOTE: Consult your local representative on applications to meet<br />
other codes or approvals not covered in this bulletin.<br />
17
Figure 18<br />
Carbon Steel Housing Assembly<br />
7.0.2 Cast Iron Housings<br />
Cast Iron TYPE 7/9 housing replacements are available for<br />
hazardous atmosphere locations. Both Class I, Div. 1,<br />
Groups C&D and Group B versions are available. The<br />
grey iron cover and base are finished with a baked-on polyester<br />
powder coat paint.<br />
NOTE: Consult your local representative on applications to meet<br />
NEMA and other codes not covered in this bulletin.<br />
Figure 17<br />
Cast Iron Housing Assembly<br />
7.0.3 Carbon Steel Housings<br />
Carbon steel TYPE 4X switch housings are available for<br />
general purpose and weatherproof installations. The housing<br />
base is cast from aluminum while the cover is made<br />
from cold rolled steel. The housings are finished with a<br />
baked-on polyester powder coat paint.<br />
NOTE: Consult your local representative on applications to meet<br />
other codes or approvals not covered in this bulletin.<br />
18 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
7.1 Replacement Housing Kits ➀<br />
7.1.1 Referenced by eighth, ninth and tenth digit<br />
Eighth Digit Ninth Digit<br />
B, C, D,<br />
F, G, H, I, S<br />
Cover<br />
Height<br />
Short<br />
Tall<br />
X-Tall<br />
O, Q<br />
➀ Housing kits include o-rings and hardware. Baffle plate not included.<br />
➁ Cover kit only. Housing base must be ordered separately by P/N 089-6505-003.<br />
7.1.2 Referenced by description<br />
Housing Material TYPE 1 TYPE 4X TYPE 4X/7/9 TYPE 7/9 Group B<br />
Lexan Cover Kit 089-6522-001➁<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
TYPE 4X/7/9<br />
with drain<br />
TYPE 7/9<br />
with drain<br />
CS cover, aluminum base 089-6511-003➁ 089-6509-003➁ N/A<br />
N/A<br />
N/A<br />
N/A<br />
Cast aluminum<br />
089-6582-023 089-6582-023 089-6582-032 089-6582-028<br />
N/A<br />
Cast Iron N/A 089-6582-002 N/A 089-6582-003<br />
CS cover, aluminum base 089-6512-003➁ 089-6510-003➁ N/A<br />
N/A<br />
N/A<br />
N/A<br />
Cast aluminum<br />
089-6582-024 089-6582-024 089-6582-033 089-6582-029<br />
N/A<br />
Cast Iron N/A 089-6582-005 089-6582-008 N/A 089-6582-006<br />
CS cover, aluminum base<br />
089-6528-003 N/A<br />
Cast aluminum N/A 089-6582-025 089-6582-025<br />
Cast Iron N/A 089-6578-001<br />
7.1.3 ATEX Housing Replacements<br />
Housing<br />
Material<br />
Cast Alum<br />
Cast Iron<br />
Tenth Digit<br />
E, G, Y, R P, Q S, T F, H, D, M A, B J, K, G V, W<br />
A, B, C, D, E 089-6509-003➁ 089-6582-023 N/A 089-6510-003➁ 089-6582-024 N/A N/A<br />
K, L, M, N, O 089-6582-002 089-6582-023 089-6582-032 089-6582-005 089-6582-024 089-6582-033 089-6582-008<br />
U, V, W, X, Y 089-6582-003 089-6582-028<br />
089-6582-006 089-6582-029<br />
A, B, C, D, E<br />
N/A 089-6528-003 089-6582-025<br />
N/A N/A<br />
K, L, M, N, O 089-6578-001 089-6582-025<br />
Part Description<br />
N/A<br />
N/A N/A<br />
N/A N/A N/A<br />
Short Tall<br />
XP IS XP IS<br />
Cover 089-6582-035 089-6582-036 089-6582-037 089-6582-038<br />
Base w/ 1" NPT conduit entry 089-6582-041 089-6582-043 089-6582-041 089-6582-043<br />
Base w/ M20 × 1.5 conduit entry 089-6582-040 089-6582-042 089-6582-040 089-6582-042<br />
Cover<br />
Base w/ 3 ⁄4" NPT conduit entry<br />
Base w/ M20 × 1.5 conduit entry<br />
C/F<br />
19
7.2 Replacement Gaskets and Hardware<br />
Housing Material<br />
8.0 Manual Reset Option<br />
8.1 Parts Breakdown and Identification<br />
Part No. 089-6507-001, on Boiler Controls Equipped<br />
with Manual Reset (*denotes included in kit)<br />
Round head screw*<br />
(Baffle Plate to <strong>Switch</strong><br />
Mechanism)<br />
Enclosure<br />
Type<br />
Fastening screw (or nut)<br />
Clamp screw<br />
Reset actuating assembly*<br />
9th Digit 10th Digit<br />
CS cover, aluminum base Type 4, 4X A, B, C, D, E D, E, F, H, R, Y, M, G<br />
Figure 19<br />
3/4"<br />
O-ring<br />
012-2201-116<br />
<strong>Switch</strong> cover<br />
1 ⁄4" Drilled hole<br />
20 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
7 ⁄8"<br />
Cover<br />
Gasket<br />
Baffle<br />
Plate➂<br />
<strong>Switch</strong> assembly<br />
Baffle plate assembly*<br />
Nameplate and<br />
serial number<br />
Reset plunger*<br />
Cover<br />
Hardware<br />
012-1318-001 036-5303-001 089-6508-001<br />
Cast Iron Type 7/9, 4X/7/9 K, L, M, N, O D, R, Y, M 012-2201-249 036-5303-001<br />
Cast Iron Group B K, L, M, N, O V, W 012-2201-222 005-6603-135<br />
Cast Aluminum<br />
Type 4X A, B, C, D, E A, B, P, Q<br />
Type 4X/7/9, 7/9 K, L, M, N, O A, B, P, Q<br />
Group B K, L, M, N, O J, K, S, T<br />
ATEX XP A, B, C, D, E, F, G C, 9<br />
ATEX IS A, B, C, D, E S, T<br />
012-2201-253 005-6657-001<br />
Cast Iron ATEX XP U, V, W, Y, 7 5, 7 N/A 012-1301-005 036-5303-001<br />
➂ For models with manual reset options, see page 23 for parts.<br />
N/A
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
8.2 Field Installation Instructions<br />
Caution: Before attempting work on any level control, be certain to<br />
pull disconnect switch or otherwise assure that electrical<br />
circuit through control is de-energized.<br />
1. Remove switch cover by loosening fastening screw (or nut).<br />
2. Drill a 1 ⁄4" diameter hole in cover at 7 ⁄8" up from bottom<br />
edge, as shown.<br />
3. Disconnect wiring from supply side of terminal strip on<br />
switch mechanisms.<br />
NOTE: Measure location of switch mechanism(s) on enclosing tube<br />
and record for reference use during reassembly. (Measure<br />
from top of enclosing tube to top of mounting clamp on switch<br />
mechanism[s]).<br />
4. Loosen screw in split mounting clamp of switch mechanism(s)<br />
until assembly moves freely on enclosing tube.<br />
5. Remove small round head screw securing baffle plate to<br />
switch mechanism.<br />
6. Carefully lift off switch mechanism(s) and baffle plate.<br />
Place on a clean surface, free of any metal particles that<br />
may be attracted onto the magnet(s).<br />
7. Install a new baffle plate assembly, with manual reset<br />
mechanism, and carefully replace switch mechanism(s) in<br />
reverse of steps 3 through 6 above.<br />
8. Replace switch cover, lining up drilled hole with hole in<br />
reset actuating mechanism. Do not tighten cover fastening<br />
screw (or nut) at this point.<br />
9. Thread reset plunger into actuating mechanism through<br />
drilled hole in switch cover and thumb tighten securely.<br />
Reposition switch cover as necessary to be certain it does<br />
not bind reset plunger.<br />
10. Tighten fastening screw (or nut) on switch cover and<br />
check action of plunger to see that it moves freely.<br />
11. Vary level in float chamber to test operation of manual<br />
reset mechanism.<br />
NOTE: Boiler level controls should not start firing equipment when<br />
boiler water level has returned to normal (safe point) until reset<br />
plunger has been manually depressed. If control starts firing<br />
equipment, magnet stop arm on switch mechanism must be<br />
bent out on switch frame 1 ⁄32" allowing magnet to swing further<br />
from enclosing tube arm and into the field of the reset magnet.<br />
Caution: If it is necessary to reposition manual reset plunger, entire<br />
switch mechanism(s) must be loosened and rotated on<br />
enclosing tube to desired position (refer to step 4). Do not<br />
attempt to position plunger by twisting switch cover or<br />
damage to switch mechanism(s) will result.<br />
21
9.0 <strong>Switch</strong> and Housing Model Codes<br />
<strong>Switch</strong><br />
Type<br />
The following charts identify the switch and housing model codes used with the buoyancy products. The<br />
eighth, ninth and tenth digit combinations may be used to identify the type and number of switches,<br />
number of contacts, switch magnet strength as well as housing type, size and options. The switch and<br />
housing codes in bold are currently valid and available in combination with various buoyancy products.<br />
The unbolded codes are no longer valid and should be replaced by the appropriate valid code. Mercury<br />
switches are no longer available. All mercury switch mechanisms should be replaced by dry contact<br />
mechanisms with the appropriate process temperature rating. See switch specifications, page 13.<br />
example model number:<br />
Housing<br />
Height<br />
& Options<br />
<strong>Switch</strong><br />
Contacts<br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
B K A<br />
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes<br />
Type 4<br />
Carbon<br />
Steel<br />
Type 4X<br />
Carbon<br />
Steel<br />
Type 7/9<br />
Cast Iron<br />
Type 4X<br />
Cast Alum<br />
1" NPT<br />
Type 4X<br />
Cast Alum<br />
M20 × 1.5<br />
Type 4X/7/9<br />
Cast Alum<br />
Group B<br />
Cast Iron<br />
Type 4X/7/9<br />
Group B<br />
Cast Alum<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
AAE<br />
AAG<br />
AAF<br />
AAY<br />
AAR<br />
AAM<br />
AKY<br />
AKR<br />
AKM<br />
AAQ<br />
AAP<br />
AAB<br />
A2Q<br />
A2P<br />
A2B<br />
AKQ<br />
AKP<br />
AKB<br />
—<br />
—<br />
AKW<br />
AKS<br />
AKT<br />
AKK<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
AAH<br />
ABF<br />
ABH<br />
AAD<br />
ABM<br />
ABD<br />
AKD<br />
ALM<br />
ALD<br />
AAA<br />
ABB<br />
ABA<br />
A2A<br />
A4B<br />
A4A<br />
AKA<br />
ALB<br />
ALA<br />
AKV<br />
ALW<br />
ALV<br />
AKJ<br />
ALK<br />
ALJ<br />
3<br />
Yellow<br />
Red<br />
ACF<br />
ACH<br />
ACM<br />
ACD<br />
AMM<br />
AMD<br />
ACB<br />
ACA<br />
A6B<br />
A6A<br />
AMB<br />
AMA<br />
AMW<br />
AMV<br />
AMK<br />
AMJ<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
ADE<br />
ADG<br />
ADF<br />
ADH<br />
AEF<br />
AEH<br />
ADY<br />
ADR<br />
ADM<br />
ADD<br />
AEM<br />
AED<br />
ANY<br />
ANR<br />
ANM<br />
AND<br />
AOM<br />
AOD<br />
ADQ<br />
ADP<br />
ADB<br />
ADA<br />
AEB<br />
AEA<br />
A8Q<br />
A8P<br />
A8B<br />
A8A<br />
A1B<br />
A1A<br />
ANQ<br />
ANP<br />
ANB<br />
ANA<br />
AOB<br />
AOA<br />
—<br />
—<br />
ANW<br />
ANV<br />
AOW<br />
AOV<br />
ANS<br />
ANT<br />
ANK<br />
ANJ<br />
AOK<br />
AOJ<br />
Short w/<br />
Yellow — — AUY — — AUQ — —<br />
Drain<br />
1<br />
Red<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
AUR<br />
AUM<br />
—<br />
—<br />
—<br />
—<br />
AUP<br />
AUB<br />
—<br />
—<br />
—<br />
—<br />
Tall w/<br />
Drain<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
AUD<br />
AVM<br />
AVD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
AUA<br />
AVB<br />
AVA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Mercury<br />
3<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
AWM<br />
AWD<br />
—<br />
—<br />
—<br />
—<br />
AWB<br />
AWA<br />
—<br />
—<br />
—<br />
—<br />
Short w/<br />
Yellow — — AXY — — AXQ — —<br />
Drain<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
AXR<br />
AXM<br />
AXD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
AXP<br />
AXB<br />
AXA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Drain<br />
2<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
AYM<br />
AYD<br />
—<br />
—<br />
—<br />
—<br />
AYB<br />
AYA<br />
—<br />
—<br />
—<br />
—<br />
Short w/<br />
Yellow AFE AFY APY AFQ — APQ — —<br />
Heater<br />
1<br />
Red<br />
Yellow<br />
AFG<br />
AFF<br />
AFR<br />
AFM<br />
APR<br />
APM<br />
AFP<br />
AFB<br />
—<br />
—<br />
APP<br />
APB<br />
—<br />
—<br />
—<br />
—<br />
Tall w/<br />
Heater<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
AFH<br />
AGF<br />
AGH<br />
AFD<br />
AGM<br />
AGD<br />
APD<br />
AQM<br />
AQD<br />
AFA<br />
AGB<br />
AGA<br />
—<br />
—<br />
—<br />
APA<br />
AQB<br />
AQA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
3<br />
Yellow<br />
Red<br />
AHF<br />
AHH<br />
AHM<br />
AHD<br />
ARM<br />
ARD<br />
AHB<br />
AHA<br />
—<br />
—<br />
ARB<br />
ARA<br />
—<br />
—<br />
—<br />
—<br />
Short w/<br />
Yellow AIE AIY ASY AIQ — ASQ — —<br />
Heater<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
AIG<br />
AIF<br />
AIH<br />
AIR<br />
AIM<br />
AID<br />
ASR<br />
ASM<br />
ASD<br />
AIP<br />
AIB<br />
AIA<br />
—<br />
—<br />
—<br />
ASP<br />
ASB<br />
ASA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Heater<br />
2<br />
Yellow<br />
Red<br />
AJF<br />
AJH<br />
AJM<br />
AJD<br />
ATM<br />
ATD<br />
AJB<br />
AJA<br />
—<br />
—<br />
ATB<br />
ATA<br />
—<br />
—<br />
—<br />
—<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
22 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Housing<br />
Height<br />
& Options<br />
<strong>Switch</strong><br />
Contacts<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
Type 4<br />
Carbon<br />
Steel<br />
Type 4X<br />
Carbon<br />
Steel<br />
Type 7/9<br />
Cast Iron<br />
Type 4X<br />
Cast Alum<br />
1" NPT<br />
Type 4X<br />
Cast Alum<br />
M20 × 1.5<br />
Type 4X/7/9<br />
Cast Alum<br />
Group B<br />
Cast Iron<br />
Type 4X/7/9<br />
Group B<br />
Cast Alum<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
BAE<br />
BAG<br />
BAF<br />
BAY<br />
BAR<br />
BAM<br />
BKY<br />
BKR<br />
BKM<br />
BAQ<br />
BAP<br />
BAB<br />
B2Q<br />
B2P<br />
B2B<br />
BKQ<br />
BKP<br />
BKB<br />
—<br />
—<br />
BKW<br />
BKS<br />
BKT<br />
BKK<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
BAH<br />
BBF<br />
BBH<br />
BAD<br />
BBM<br />
BBD<br />
BKD<br />
BLM<br />
BLD<br />
BAA<br />
BBB<br />
BBA<br />
B2A<br />
B4B<br />
B4A<br />
BKA<br />
BLB<br />
BLA<br />
BKV<br />
BLW<br />
BLV<br />
BKJ<br />
BLK<br />
BLJ<br />
3<br />
Yellow<br />
Red<br />
BCF<br />
BCH<br />
BCM<br />
BCD<br />
BMM<br />
BMD<br />
BCB<br />
BCA<br />
B6B<br />
B6A<br />
BMB<br />
BMA<br />
BMW<br />
BMV<br />
BMK<br />
BMJ<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
BDE<br />
BDG<br />
BDF<br />
BDH<br />
BEF<br />
BEH<br />
BDY<br />
BDR<br />
BDM<br />
BDD<br />
BEM<br />
BED<br />
BNY<br />
BNR<br />
BNM<br />
BND<br />
BOM<br />
BOD<br />
BDQ<br />
BDP<br />
BDB<br />
BDA<br />
BEB<br />
BEA<br />
B8Q<br />
B8P<br />
B8B<br />
B8A<br />
B1B<br />
B1A<br />
BNQ<br />
BNP<br />
BNB<br />
BNA<br />
BOB<br />
BOA<br />
—<br />
—<br />
BNW<br />
BNV<br />
BOW<br />
BOV<br />
BNS<br />
BNT<br />
BNK<br />
BNJ<br />
BOK<br />
BOJ<br />
Short w/<br />
Yellow — — BUY — — BUQ — —<br />
Drain<br />
1<br />
Red<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
BUR<br />
BUM<br />
—<br />
—<br />
—<br />
—<br />
BUP<br />
BUB<br />
—<br />
—<br />
—<br />
—<br />
Tall w/<br />
Drain<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
BUD<br />
BVM<br />
BVD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
BUA<br />
BVB<br />
BVA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
3<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
BWM<br />
BWD<br />
—<br />
—<br />
—<br />
—<br />
BWB<br />
BWA<br />
—<br />
—<br />
—<br />
—<br />
Short w/<br />
Yellow — — BXY — — BXQ — —<br />
Drain<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
BXR<br />
BXM<br />
BXD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
BXP<br />
BXB<br />
BXA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Dry Contact<br />
Drain<br />
Short w/<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
BFE<br />
—<br />
—<br />
BFY<br />
BYM<br />
BYD<br />
BPY<br />
—<br />
—<br />
BFQ<br />
—<br />
—<br />
—<br />
BYB<br />
BYA<br />
BPQ<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Heater<br />
1<br />
Red<br />
Yellow<br />
BFG<br />
BFF<br />
BFR<br />
BFM<br />
BPR<br />
BPM<br />
BFP<br />
BFB<br />
—<br />
—<br />
BPP<br />
BPB<br />
—<br />
—<br />
—<br />
—<br />
Tall w/<br />
Heater<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
BFH<br />
BGF<br />
BGH<br />
BFD<br />
BGM<br />
BGD<br />
BPD<br />
BQM<br />
BQD<br />
BFA<br />
BGB<br />
BGA<br />
—<br />
—<br />
—<br />
BPA<br />
BQB<br />
BQA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
3<br />
Yellow<br />
Red<br />
BHF<br />
BHH<br />
BHM<br />
BHD<br />
BRM<br />
BRD<br />
BHB<br />
BHA<br />
—<br />
—<br />
BRB<br />
BRA<br />
—<br />
—<br />
—<br />
—<br />
Short w/<br />
Yellow BIE BIY BSY BIQ — BSQ — —<br />
Heater<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
BIG<br />
BIF<br />
BIH<br />
BIR<br />
BIM<br />
BID<br />
BSR<br />
BSM<br />
BSD<br />
BIP<br />
BIB<br />
BIA<br />
—<br />
—<br />
—<br />
BSP<br />
BSB<br />
BSA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Heater<br />
2<br />
Yellow<br />
Red<br />
BJF<br />
BJH<br />
BJM<br />
BJD<br />
BTM<br />
BTD<br />
BJB<br />
BJA<br />
—<br />
—<br />
BTB<br />
BTA<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
CAE<br />
CAG<br />
CAF<br />
CAY<br />
CAR<br />
CAM<br />
CKY<br />
CKR<br />
CKM<br />
CAQ<br />
CAP<br />
CAB<br />
C2Q<br />
C2P<br />
C2B<br />
CKQ<br />
CKP<br />
CKB<br />
—<br />
—<br />
CKW<br />
CKS<br />
CKT<br />
CKK<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
CAH<br />
CBF<br />
CBH<br />
CAD<br />
CBM<br />
CBD<br />
CKD<br />
CLM<br />
CLD<br />
CAA<br />
CBB<br />
CBA<br />
C2A<br />
C4B<br />
C4A<br />
CKA<br />
CLB<br />
CLA<br />
CKV<br />
CLW<br />
CLV<br />
CKJ<br />
CLK<br />
CLJ<br />
3<br />
Yellow<br />
Red<br />
CCF<br />
CCH<br />
CCM<br />
CCD<br />
CMM<br />
CMD<br />
CCB<br />
CCA<br />
C6B<br />
C6A<br />
CMB<br />
CMA<br />
CMW<br />
CMV<br />
CMK<br />
CMJ<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
CDE<br />
CDG<br />
CDF<br />
CDH<br />
CEF<br />
CEH<br />
CDY<br />
CDR<br />
CDM<br />
CDD<br />
CEM<br />
CED<br />
CNY<br />
CNR<br />
CNM<br />
CND<br />
COM<br />
COD<br />
CDQ<br />
CDP<br />
CDB<br />
CDA<br />
CEB<br />
CEA<br />
C8Q<br />
C8P<br />
C8B<br />
C8A<br />
C1B<br />
C1A<br />
CNQ<br />
CNP<br />
CNB<br />
CNA<br />
COB<br />
COA<br />
—<br />
—<br />
CNW<br />
CNV<br />
COW<br />
COV<br />
CNS<br />
CNT<br />
CNK<br />
CNJ<br />
COK<br />
COJ<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
23
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Dry Contact<br />
DC Voltage<br />
Dry Contact<br />
Housing<br />
Height<br />
& Options<br />
Short w/<br />
Drain<br />
Tall w/<br />
Drain<br />
Short w/<br />
Drain<br />
Tall w/<br />
Drain<br />
Short w/<br />
Heater<br />
Tall w/<br />
Heater<br />
Short w/<br />
Heater<br />
Tall w/<br />
Heater<br />
Short<br />
Tall<br />
Short<br />
Tall<br />
Short w/<br />
Drain<br />
Tall w/<br />
Drain<br />
Short w/<br />
Drain<br />
Tall w/<br />
Drain<br />
Short w/<br />
Heater<br />
Tall w/<br />
Heater<br />
<strong>Switch</strong><br />
Contacts<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
SPDT<br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
Type 4<br />
Carbon<br />
Steel<br />
Type 4X<br />
Carbon<br />
Steel<br />
Type 7/9<br />
Cast Iron<br />
Type 4X<br />
Cast Alum<br />
1" NPT<br />
Type 4X<br />
Cast Alum<br />
M20 × 1.5<br />
Type 4X/7/9<br />
Cast Alum<br />
Group B<br />
Cast Iron<br />
Type 4X/7/9<br />
Group B<br />
Cast Alum<br />
Yellow — — CUY — — CUQ — —<br />
1<br />
Red<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
CUR<br />
CUM<br />
—<br />
—<br />
—<br />
—<br />
CUP<br />
CUB<br />
—<br />
—<br />
—<br />
—<br />
Red — — CUD — — CUA — —<br />
2<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
CVM<br />
CVD<br />
—<br />
—<br />
—<br />
—<br />
CVB<br />
CVA<br />
—<br />
—<br />
—<br />
—<br />
3<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
CWM<br />
CWD<br />
—<br />
—<br />
—<br />
—<br />
CWB<br />
CWA<br />
—<br />
—<br />
—<br />
—<br />
Yellow — — CXY — — CXQ — —<br />
1<br />
Red<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
CXR<br />
CXM<br />
—<br />
—<br />
—<br />
—<br />
CXP<br />
CXB<br />
—<br />
—<br />
—<br />
—<br />
Red — — CXD — — CXA — —<br />
2<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
CYM<br />
CYD<br />
—<br />
—<br />
—<br />
—<br />
CYB<br />
CYA<br />
—<br />
—<br />
—<br />
—<br />
Yellow CFE CFY — CFQ — — — —<br />
1<br />
Red<br />
Yellow<br />
CFG<br />
CFF<br />
CFR<br />
CFM<br />
—<br />
—<br />
CFP<br />
CFB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Red CFH CFD — CFA — — — —<br />
2<br />
Yellow<br />
Red<br />
CGF<br />
CGH<br />
CGM<br />
CGD<br />
—<br />
—<br />
CGB<br />
CGA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
3<br />
Yellow<br />
Red<br />
CHF<br />
CHH<br />
CHM<br />
CHD<br />
—<br />
—<br />
CHB<br />
CHA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Yellow CIE CIY — CIQ — — — —<br />
1<br />
Red<br />
Yellow<br />
CIG<br />
CIF<br />
CIR<br />
CIM<br />
—<br />
—<br />
CIP<br />
CIB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Red CIH CID — CIA — — — —<br />
2<br />
Yellow<br />
Red<br />
CJF<br />
CJH<br />
CJM<br />
CJD<br />
—<br />
—<br />
CJB<br />
CJA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
1<br />
Yellow<br />
Yellow<br />
DAE<br />
DAF<br />
DAY<br />
DAM<br />
DKY<br />
DKM<br />
DAQ<br />
DAB<br />
D2Q<br />
D2B<br />
DKQ<br />
DKB<br />
—<br />
DKW<br />
DKS<br />
DKK<br />
2 Yellow DBF DBM DLM DBB D4B DLB DLW DLK<br />
3 Yellow DCF DCM DMM DCB D6B DMB DMW DMK<br />
1<br />
Yellow<br />
Yellow<br />
DDE<br />
DDF<br />
DDY<br />
DDM<br />
DNY<br />
DNM<br />
DDQ<br />
DDB<br />
D8Q<br />
D8B<br />
DNQ<br />
DNB<br />
—<br />
DNW<br />
DNS<br />
DNK<br />
2 Yellow DEF DEM DOM DEB D1B DOB DOW DOK<br />
1<br />
Yellow — — DUY — — DUQ — —<br />
Yellow — — DUM — — DUB — —<br />
2 Yellow — — DVM — — DVB — —<br />
3 Yellow — — DWM — — DWB — —<br />
1<br />
Yellow — — DXY — — DXQ — —<br />
Yellow — — DXM — — DXB — —<br />
2 Yellow — — DYM — — DYB — —<br />
1<br />
Yellow DFE DFY DPY DFQ — DPQ — —<br />
Yellow DFF DFM DPM DFB — DPB — —<br />
2 Yellow DGF DGM DQM DGB — DQB — —<br />
3 Yellow DHF DHM DRM DHB — DRB — —<br />
Short w/<br />
Heater<br />
Tall w/<br />
DPDT<br />
1<br />
Yellow<br />
Yellow<br />
DIE<br />
DIF<br />
DIY<br />
DIM<br />
DSY<br />
DSM<br />
DIQ<br />
DIB<br />
—<br />
—<br />
DSQ<br />
DSB<br />
—<br />
—<br />
—<br />
—<br />
Heater<br />
2 Yellow DJF DJM DTM DJB — DTB — —<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
24 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Housing<br />
Height<br />
& Options<br />
<strong>Switch</strong><br />
Contacts<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
Type 4<br />
Carbon<br />
Steel<br />
Type 4X<br />
Carbon<br />
Steel<br />
Type 7/9<br />
Cast Iron<br />
Type 4X<br />
Cast Alum<br />
1" NPT<br />
Type 4X<br />
Cast Alum<br />
M20 × 1.5<br />
Type 4X/7/9<br />
Cast Alum<br />
Group B<br />
Cast Iron<br />
Type 4X/7/9<br />
Group B<br />
Cast Alum<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
EAE<br />
EAG<br />
EAF<br />
EAY<br />
EAR<br />
EAM<br />
EKY<br />
EKR<br />
EKM<br />
EAQ<br />
EAP<br />
EAB<br />
—<br />
—<br />
—<br />
EKQ<br />
EKP<br />
EKB<br />
—<br />
—<br />
EKW<br />
EKS<br />
EKT<br />
EKK<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
EAH<br />
EBF<br />
EBH<br />
EAD<br />
EBM<br />
EBD<br />
EKD<br />
ELM<br />
ELD<br />
EAA<br />
EBB<br />
EBA<br />
—<br />
—<br />
—<br />
EKA<br />
ELB<br />
ELA<br />
EKV<br />
ELW<br />
ELV<br />
EKJ<br />
ELK<br />
ELJ<br />
3<br />
Yellow<br />
Red<br />
ECF<br />
ECH<br />
ECM<br />
ECD<br />
EMM<br />
EMD<br />
ECB<br />
ECA<br />
—<br />
—<br />
EMB<br />
EMA<br />
EMW<br />
EMV<br />
EMK<br />
EMJ<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
EDE<br />
EDG<br />
EDF<br />
EDH<br />
EEF<br />
EEH<br />
EDY<br />
EDR<br />
EDM<br />
EDD<br />
EEM<br />
EED<br />
ENY<br />
ENR<br />
ENM<br />
END<br />
EOM<br />
EOD<br />
EDQ<br />
EDP<br />
EDB<br />
EDA<br />
EEB<br />
EEA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
ENQ<br />
ENP<br />
ENB<br />
ENA<br />
EOB<br />
EOA<br />
—<br />
—<br />
ENW<br />
ENV<br />
EOW<br />
EOV<br />
ENS<br />
ENT<br />
ENK<br />
ENJ<br />
EOK<br />
EOJ<br />
Short w/<br />
Yellow — — EUY — — EUQ — —<br />
Drain<br />
1<br />
Red<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
EUR<br />
EUM<br />
—<br />
—<br />
—<br />
—<br />
EUP<br />
EUB<br />
—<br />
—<br />
—<br />
—<br />
Vibration<br />
Resistant<br />
Mercury<br />
Tall w/<br />
Drain<br />
Short w/<br />
SPDT<br />
2<br />
3<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
EUD<br />
EVM<br />
EVD<br />
EWM<br />
EWD<br />
EXY<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
EUA<br />
EVB<br />
EVA<br />
EWB<br />
EWA<br />
EXQ<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Drain<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
EXR<br />
EXM<br />
EXD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
EXP<br />
EXB<br />
EXA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Drain<br />
2<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
EYM<br />
EYD<br />
—<br />
—<br />
—<br />
—<br />
EYB<br />
EYA<br />
—<br />
—<br />
—<br />
—<br />
Short w/<br />
Yellow EFE EFY EPY EFQ — EPQ — —<br />
Heater<br />
1<br />
Red<br />
Yellow<br />
EFG<br />
EFF<br />
EFR<br />
EFM<br />
EPR<br />
EPM<br />
EFP<br />
EFB<br />
—<br />
—<br />
EPP<br />
EPB<br />
—<br />
—<br />
—<br />
—<br />
Tall w/<br />
Heater<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
EFH<br />
EGF<br />
EGH<br />
EFD<br />
EGM<br />
EGD<br />
EPD<br />
EQM<br />
EQD<br />
EFA<br />
EGB<br />
EGA<br />
—<br />
—<br />
—<br />
EPA<br />
EQB<br />
EQA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
3<br />
Yellow<br />
Red<br />
EHF<br />
EHH<br />
EHM<br />
EHD<br />
ERM<br />
ERD<br />
EHB<br />
EHA<br />
—<br />
—<br />
ERB<br />
ERA<br />
—<br />
—<br />
—<br />
—<br />
Short w/<br />
Yellow EIE EIY ESY EIQ — ESQ — —<br />
Heater<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
EIG<br />
EIF<br />
EIH<br />
EIR<br />
EIM<br />
EID<br />
ESR<br />
ESM<br />
ESD<br />
EIP<br />
EIB<br />
EIA<br />
—<br />
—<br />
—<br />
ESP<br />
ESB<br />
ESA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Heater<br />
2<br />
Yellow<br />
Red<br />
EJF<br />
EJH<br />
EJM<br />
EJD<br />
ETM<br />
ETD<br />
EJB<br />
EJA<br />
—<br />
—<br />
ETB<br />
ETA<br />
—<br />
—<br />
—<br />
—<br />
Herm. Sealed<br />
Short<br />
Tall<br />
SPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
FAE<br />
FAG<br />
FAF<br />
FAH<br />
FBF<br />
FBH<br />
FAY<br />
FAR<br />
FAM<br />
FAD<br />
FBM<br />
FBD<br />
FKY<br />
FKR<br />
FKM<br />
FKD<br />
FLM<br />
FLD<br />
FAQ<br />
FAP<br />
FAB<br />
FAA<br />
FBB<br />
FBA<br />
F2Q<br />
F2P<br />
FCB<br />
FCA<br />
FFB<br />
FFA<br />
FKQ<br />
FKP<br />
FKB<br />
FKA<br />
FLB<br />
FLA<br />
—<br />
—<br />
FKW<br />
FKV<br />
FLW<br />
FLV<br />
FKS<br />
FKT<br />
FKK<br />
FKJ<br />
FLK<br />
FLJ<br />
Dry Contact<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
FDE<br />
FDG<br />
FDF<br />
FDH<br />
FEF<br />
FEH<br />
FDY<br />
FDR<br />
FDM<br />
FDD<br />
FEM<br />
FED<br />
FNY<br />
FNR<br />
FNM<br />
FND<br />
FOM<br />
FOD<br />
FDQ<br />
FDP<br />
FDB<br />
FDA<br />
FEB<br />
FEA<br />
F8Q<br />
F8P<br />
FGB<br />
FGA<br />
FHB<br />
FHA<br />
FNQ<br />
FNP<br />
FNB<br />
FNA<br />
FOB<br />
FOA<br />
—<br />
—<br />
FNW<br />
FNV<br />
FOW<br />
FOV<br />
FNS<br />
FNT<br />
FNK<br />
FNJ<br />
FOK<br />
FOJ<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
25
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Housing<br />
Height<br />
& Options<br />
<strong>Switch</strong><br />
Contacts<br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
Type 4<br />
Carbon<br />
Steel<br />
Type 4X<br />
Carbon<br />
Steel<br />
Type 7/9<br />
Cast Iron<br />
Type 4X<br />
Cast Alum<br />
1" NPT<br />
Type 4X<br />
Cast Alum<br />
M20 × 1.5<br />
Type 4X/7/9<br />
Cast Alum<br />
Group B<br />
Cast Iron<br />
Type 4X/7/9<br />
Group B<br />
Cast Alum<br />
Dual Magnet<br />
Dry Contact<br />
Tall<br />
Tall w/<br />
SPDT<br />
DPDT<br />
SPDT<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
GAF<br />
GAH<br />
GDF<br />
GDH<br />
—<br />
—<br />
GAM<br />
GAD<br />
GDM<br />
GDD<br />
—<br />
—<br />
GKM<br />
GKD<br />
GNM<br />
GND<br />
GUM<br />
GUD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
GKW<br />
GKV<br />
GNW<br />
GNV<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Drain<br />
DPDT<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
GXM<br />
GXD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Dual Magnet<br />
Dry Contact<br />
Tall<br />
Tall w/<br />
SPDT<br />
DPDT<br />
SPDT<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
HAF<br />
HAH<br />
HDF<br />
HDH<br />
—<br />
—<br />
HAM<br />
HAD<br />
HDM<br />
HDD<br />
—<br />
—<br />
HKM<br />
HKD<br />
HNM<br />
HND<br />
HUM<br />
HUD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
HKW<br />
HKV<br />
HNW<br />
HNV<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Drain<br />
DPDT<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
HXM<br />
HXD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
DC Voltage<br />
Dual Magnet<br />
Dry Contact<br />
Tall<br />
Tall w/<br />
SPDT<br />
DPDT<br />
SPDT<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
IAF<br />
IAH<br />
IDF<br />
IDH<br />
—<br />
—<br />
IAM<br />
IAD<br />
IDM<br />
IDD<br />
—<br />
—<br />
IKM<br />
IKD<br />
INM<br />
IND<br />
IUM<br />
IUD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
IKW<br />
IKV<br />
INW<br />
INV<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Drain<br />
DPDT<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
IXM<br />
IXD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
High Temp<br />
Mercury<br />
for B40<br />
Tall<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
1 Yellow<br />
LAF<br />
LDF<br />
LBF<br />
LEF<br />
LAM<br />
LDM<br />
LBM<br />
LEM<br />
LKM<br />
LNM<br />
LLM<br />
LOM<br />
LAB<br />
LDB<br />
LBB<br />
LEB<br />
L2B<br />
L8B<br />
—<br />
—<br />
LKB<br />
LNB<br />
LLB<br />
LOB<br />
LKW<br />
LNW<br />
LLW<br />
LOW<br />
LKK<br />
LNK<br />
LLK<br />
LOK<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
MAE<br />
MAG<br />
MAF<br />
MAY<br />
MAR<br />
MAM<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Red MAH MAD — — — — — —<br />
High Temp<br />
Mercury<br />
with<br />
Tall<br />
SPDT<br />
2<br />
Yellow<br />
Red<br />
R/B<br />
MBF<br />
MBH<br />
—<br />
MBM<br />
MBD<br />
MBE<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Manual Reset*<br />
Yellow MCF MCM — — — — — —<br />
*All Housing<br />
on manual<br />
reset switches<br />
3 Red<br />
R/B/B<br />
MCH<br />
—<br />
MCD<br />
MCE<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Type/NEMA 1<br />
only. Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
MDE<br />
MDG<br />
MDF<br />
MDH<br />
MEF<br />
MEH<br />
MDY<br />
MDR<br />
MDM<br />
MDD<br />
MEM<br />
MED<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Mercury<br />
for<br />
C10/C15<br />
X-Tall<br />
X-Tall w/<br />
Heater<br />
X-Tall w/<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
SPDT<br />
3 Yellow<br />
NCF<br />
NEF<br />
NHF<br />
NJF<br />
—<br />
NCM<br />
NEM<br />
NHM<br />
NJM<br />
—<br />
NMM<br />
NKM<br />
NRM<br />
NLM<br />
NWM<br />
NCB<br />
NEB<br />
NHB<br />
NJB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
NMB<br />
NKB<br />
NRB<br />
NLB<br />
NWB<br />
NMI<br />
NKI<br />
—<br />
—<br />
—<br />
NMN<br />
NKN<br />
—<br />
—<br />
—<br />
Drain DPDT — — NNM — — NNB — —<br />
Dry Contact<br />
for<br />
C10/C15<br />
X-Tall<br />
X-Tall w/<br />
Heater<br />
X-Tall w/<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
SPDT<br />
3 Yellow<br />
OCF<br />
OEF<br />
OHF<br />
OJF<br />
—<br />
OCM<br />
OEM<br />
OHM<br />
OJM<br />
—<br />
OMM<br />
OKM<br />
ORM<br />
OLM<br />
OWM<br />
OCB<br />
OEB<br />
OHB<br />
OJB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
OMB<br />
OKB<br />
ORB<br />
OLB<br />
OWB<br />
OMI<br />
OKI<br />
—<br />
—<br />
—<br />
OMN<br />
OKN<br />
—<br />
—<br />
—<br />
Drain DPDT — — ONM — — ONB — —<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
26 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Housing<br />
Height<br />
& Options<br />
<strong>Switch</strong><br />
Contacts<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
Type 4<br />
Carbon<br />
Steel<br />
Type 4X<br />
Carbon<br />
Steel<br />
Type 7/9<br />
Cast Iron<br />
Type 4X<br />
Cast Alum<br />
1" NPT<br />
Type 4X<br />
Cast Alum<br />
M20 × 1.5<br />
Type 4X/7/9<br />
Cast Alum<br />
Group B<br />
Cast Iron<br />
Type 4X/7/9<br />
Group B<br />
Cast Alum<br />
Dry Contact<br />
for<br />
C10/C15<br />
X-Tall<br />
X-Tall w/<br />
Heater<br />
X-Tall w/<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
SPDT<br />
3 Yellow<br />
QCF<br />
QEF<br />
QHF<br />
QJF<br />
—<br />
QCM<br />
QEM<br />
QHM<br />
QJM<br />
—<br />
QMM<br />
QKM<br />
QRM<br />
QLM<br />
QWM<br />
QCB<br />
QEB<br />
QHB<br />
QJB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
QMB<br />
QKB<br />
QRB<br />
QLB<br />
QWB<br />
QMI<br />
QKI<br />
—<br />
—<br />
—<br />
QMN<br />
QKN<br />
—<br />
—<br />
—<br />
Drain DPDT — — QNM — — QNB — —<br />
Dry Contact<br />
SPDT<br />
SAF SAM SKM SAB S2B SKB SKW SKK<br />
for B40<br />
DC Dry Contact<br />
Tall<br />
DPDT<br />
SPDT<br />
1 Yellow<br />
SDF<br />
SBF<br />
SDM<br />
SBM<br />
SNM<br />
SLM<br />
SDB<br />
SBB<br />
S8B<br />
S2R<br />
SNB<br />
SLB<br />
SNW<br />
SLW<br />
SNK<br />
SLK<br />
for B40<br />
DPDT SEF SEM SOM SEB S8R SOB SOW SOK<br />
Vibration<br />
Resistant<br />
Mercury<br />
For<br />
C10/C15<br />
X-Tall<br />
X-Tall w/<br />
Heater<br />
X-Tall w/<br />
Drain<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
3 Yellow<br />
TCF<br />
TEF<br />
THF<br />
TJF<br />
—<br />
—<br />
TCM<br />
TEM<br />
THM<br />
TJM<br />
—<br />
—<br />
TMM<br />
TKM<br />
TRM<br />
TLM<br />
TWM<br />
TNM<br />
TCB<br />
TEB<br />
THB<br />
TJB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
TMB<br />
TKB<br />
TRB<br />
TLB<br />
TWB<br />
TNB<br />
TMI<br />
TKI<br />
—<br />
—<br />
—<br />
—<br />
TMN<br />
TKN<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
UAE<br />
UAG<br />
UAF<br />
UAY<br />
UAR<br />
UAM<br />
UKY<br />
UKR<br />
UKM<br />
UAQ<br />
UAP<br />
UAB<br />
U2Q<br />
U2P<br />
U2B<br />
UKQ<br />
UKP<br />
UKB<br />
—<br />
—<br />
UKW<br />
—<br />
—<br />
—<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
UAH<br />
UBF<br />
UBH<br />
UAD<br />
UBM<br />
UBD<br />
UKD<br />
ULM<br />
ULD<br />
UAA<br />
UBB<br />
UBA<br />
U2A<br />
U4B<br />
U4A<br />
UKA<br />
ULB<br />
ULA<br />
—<br />
ULW<br />
—<br />
—<br />
—<br />
—<br />
3<br />
Yellow<br />
Red<br />
UCF<br />
UCH<br />
UCM<br />
UCD<br />
UMM<br />
UMD<br />
UCB<br />
UCA<br />
U6B<br />
U6A<br />
UMB<br />
UMA<br />
UMW<br />
—<br />
—<br />
—<br />
Dry<br />
Contact<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
UDE<br />
UDG<br />
UDF<br />
UDH<br />
UEF<br />
UEH<br />
UDY<br />
UDR<br />
UDM<br />
UDD<br />
UEM<br />
UED<br />
UNY<br />
UNR<br />
UNM<br />
UND<br />
UOM<br />
UOD<br />
UDQ<br />
UDP<br />
UDB<br />
UDA<br />
UEB<br />
UEA<br />
U8Q<br />
U8P<br />
U8B<br />
U8A<br />
U1B<br />
U1A<br />
UNQ<br />
UNP<br />
UNB<br />
UNA<br />
UOB<br />
UOA<br />
—<br />
—<br />
UNW<br />
—<br />
UOW<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
w/Gold Alloy<br />
Contacts<br />
Short w/<br />
Drain<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
UUM<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
UUQ<br />
—<br />
UUB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Tall w/<br />
Drain<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
UUD<br />
UVM<br />
UVD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
UVB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
3<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
UWM<br />
UWD<br />
—<br />
—<br />
—<br />
—<br />
UWB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Short w/<br />
Yellow — — — — — UXQ — —<br />
Drain<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
UXM<br />
UXD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
UXB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Drain<br />
2<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
UYM<br />
UYD<br />
—<br />
—<br />
—<br />
—<br />
UYB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
WAE<br />
WAG<br />
WAF<br />
WAY<br />
WAR<br />
WAM<br />
WKY<br />
WKR<br />
WKM<br />
WAQ<br />
WAP<br />
WAB<br />
W2Q<br />
W2P<br />
W2B<br />
WKQ<br />
WKP<br />
WKB<br />
—<br />
—<br />
WKW<br />
WKS<br />
WKT<br />
WKK<br />
Hermetically<br />
Sealed<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
WAH<br />
WBF<br />
WBH<br />
WAD<br />
WBM<br />
WBD<br />
WKD<br />
WLM<br />
WLD<br />
WAA<br />
WBB<br />
WBA<br />
W2A<br />
W4B<br />
W4A<br />
WKA<br />
WLB<br />
WLA<br />
—<br />
WLW<br />
—<br />
—<br />
WLK<br />
—<br />
Dry Contact<br />
3<br />
Yellow<br />
Red<br />
WCF<br />
WCH<br />
WCM<br />
WCD<br />
WMM<br />
WMD<br />
WCB<br />
WCA<br />
W6B<br />
W6A<br />
WMB<br />
WMA<br />
WMW<br />
—<br />
WMK<br />
—<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Yellow<br />
Yellow<br />
WDE<br />
WDF<br />
WEF<br />
WDY<br />
WDM<br />
WEM<br />
WNY<br />
WNM<br />
WOM<br />
WDQ<br />
WDB<br />
WEB<br />
W8Q<br />
W8B<br />
W1B<br />
WNQ<br />
WNB<br />
WOB<br />
—<br />
WNW<br />
WOW<br />
WNS<br />
WNK<br />
WOK<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
27
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Hermetically<br />
Sealed<br />
Dry Contact<br />
Hermetically<br />
Sealed<br />
Dry Contact<br />
w/Gold<br />
Housing<br />
Height<br />
& Options<br />
Short w/<br />
Drain<br />
Tall w/<br />
Drain<br />
Short w/<br />
Drain<br />
Tall w/<br />
Drain<br />
Short<br />
Tall<br />
Short<br />
Tall<br />
Short w/<br />
Drain<br />
Tall w/<br />
Drain<br />
<strong>Switch</strong><br />
Contacts<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
SPDT<br />
Set<br />
Points<br />
1<br />
2<br />
3<br />
Magnet<br />
Dot Color<br />
Type 4<br />
Carbon<br />
Steel<br />
Type 4X<br />
Carbon<br />
Steel<br />
Type 7/9<br />
Cast Iron<br />
Type 4X<br />
Cast Alum<br />
1" NPT<br />
Type 4X<br />
Cast Alum<br />
M20 × 1.5<br />
Type 4X/7/9<br />
Cast Alum<br />
Group B<br />
Cast Iron<br />
Type 4X/7/9<br />
Group B<br />
Cast Alum<br />
Yellow — — — — — WUQ — —<br />
Red — — — — — WUP — —<br />
Yellow — — WUM — — WUB — —<br />
Red — — WUD — — WUA — —<br />
Yellow — — WVM — — WVB — —<br />
Red — — WVD — — WVA — —<br />
Yellow — — WWM — — WWB — —<br />
Red — — WWD — — WWA — —<br />
1<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
—<br />
WXM<br />
—<br />
—<br />
—<br />
—<br />
WXQ<br />
WXB<br />
—<br />
—<br />
—<br />
—<br />
2 — — WYM — — — — —<br />
Yellow XAE XAY XKY XAQ X2Q XKQ — XKS<br />
1<br />
Red<br />
Yellow<br />
XAG<br />
XAF<br />
XAR<br />
XAM<br />
XKR<br />
XKM<br />
XAP<br />
XAB<br />
X2P<br />
X2B<br />
XKP<br />
XKB<br />
—<br />
XKW<br />
XKT<br />
XKK<br />
Red XAH XAD XKD XAA X2A XKA — —<br />
2<br />
Yellow<br />
Red<br />
XBF<br />
XBH<br />
XBM<br />
XBD<br />
XLM<br />
XLD<br />
XBB<br />
XBA<br />
X4B<br />
X4A<br />
XLB<br />
XLA<br />
XLW<br />
—<br />
XLK<br />
—<br />
3<br />
Yellow<br />
Red<br />
XCF<br />
XCH<br />
XCM<br />
XCD<br />
XMM<br />
XMD<br />
XCB<br />
XCA<br />
X6B<br />
X6A<br />
XMB<br />
XMA<br />
XMW<br />
—<br />
XMK<br />
—<br />
1<br />
Yellow<br />
XDE<br />
XDF<br />
XDY<br />
XDM<br />
XNY<br />
XNM<br />
XDQ<br />
XDB<br />
X8Q<br />
X8B<br />
XNQ<br />
XNB<br />
—<br />
XNW<br />
XNS<br />
XNK<br />
2 XEF XEM XOM XEB X1B XOB XOW XOK<br />
Yellow — — — — — XUQ — —<br />
1<br />
Red<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
—<br />
XUM<br />
—<br />
—<br />
—<br />
—<br />
XUP<br />
XUB<br />
—<br />
—<br />
—<br />
—<br />
Red — — XUD — — XUA — —<br />
2<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
XVM<br />
XVD<br />
—<br />
—<br />
—<br />
—<br />
XVB<br />
XVA<br />
—<br />
—<br />
—<br />
—<br />
3<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
XWM<br />
XWD<br />
—<br />
—<br />
—<br />
—<br />
XWB<br />
XWA<br />
—<br />
—<br />
—<br />
—<br />
Short w/<br />
Drain<br />
Tall w/<br />
DPDT<br />
1<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
—<br />
XXM<br />
—<br />
—<br />
—<br />
—<br />
XXQ<br />
XXB<br />
—<br />
—<br />
—<br />
—<br />
Drain<br />
2 — — XYM — — X4B — —<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
2AE<br />
2AG<br />
2AF<br />
2AY<br />
2AR<br />
2AM<br />
2KY<br />
2KR<br />
2KM<br />
2AQ<br />
2AP<br />
2AB<br />
22Q<br />
22P<br />
22B<br />
2KQ<br />
2KP<br />
2KB<br />
—<br />
—<br />
2KW<br />
2KS<br />
2KT<br />
2KK<br />
Red 2AH 2AD 2KD 2AA 22A 2KA 2KV 2KJ<br />
High Temp<br />
Vibration<br />
Tall<br />
SPDT<br />
2<br />
Yellow<br />
Red<br />
R/B<br />
Yellow<br />
2BF<br />
2BH<br />
—<br />
2CF<br />
2BM<br />
2BD<br />
—<br />
2CM<br />
2LM<br />
2LD<br />
—<br />
2MM<br />
2BB<br />
2BA<br />
2BE<br />
2CB<br />
24B<br />
24A<br />
24E<br />
26B<br />
2LB<br />
2LA<br />
2LE<br />
2MB<br />
2LW<br />
2LV<br />
—<br />
2MW<br />
2LK<br />
2LJ<br />
2LG<br />
2MK<br />
Resistant<br />
3 Red 2CH 2CD 2MD 2CA 26A 2MA 2MV 2MJ<br />
Mercury<br />
R/B/B — — — 2CE 26E 2ME — 2MG<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
2DE<br />
2DG<br />
2DF<br />
2DH<br />
2EF<br />
2EH<br />
2DY<br />
2DR<br />
2DM<br />
2DD<br />
2EM<br />
2ED<br />
2NY<br />
2NR<br />
2NM<br />
2ND<br />
2OM<br />
2OD<br />
2DQ<br />
2DP<br />
2DB<br />
2DA<br />
2EB<br />
2EA<br />
28Q<br />
28P<br />
28B<br />
28A<br />
21B<br />
21A<br />
2NQ<br />
2NP<br />
2NB<br />
2NA<br />
2OB<br />
2OA<br />
—<br />
—<br />
2NW<br />
2NV<br />
2OW<br />
2OV<br />
2NS<br />
2NT<br />
2NK<br />
2NJ<br />
2OK<br />
2OJ<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
28 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Housing<br />
Height<br />
& Options<br />
Short w/<br />
Drain<br />
<strong>Switch</strong><br />
Contacts<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
Type 4<br />
Carbon<br />
Steel<br />
Type 4X<br />
Carbon<br />
Steel<br />
Type 7/9<br />
Cast Iron<br />
Type 4X<br />
Cast Alum<br />
1" NPT<br />
Type 4X<br />
Cast Alum<br />
M20 × 1.5<br />
Type 4X/7/9<br />
Cast Alum<br />
Group B<br />
Cast Iron<br />
Type 4X/7/9<br />
Group B<br />
Cast Alum<br />
Yellow — — 2UY — — 2UQ — —<br />
1<br />
Red<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
2UR<br />
2UM<br />
—<br />
—<br />
—<br />
—<br />
2UP<br />
2UB<br />
—<br />
—<br />
—<br />
—<br />
Red — — 2UD — — 2UA — —<br />
Tall w/<br />
SPDT<br />
2<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
2VM<br />
2VD<br />
—<br />
—<br />
—<br />
—<br />
2VB<br />
2VA<br />
—<br />
—<br />
—<br />
—<br />
Drain<br />
R/B — — — — — 2VE — —<br />
Yellow — — 2WM — — 2WB — —<br />
3 Red — — 2WD — — 2WA — —<br />
R/B/B — — — — — 2WE — —<br />
Short w/<br />
Yellow — — 2XY — — 2XQ — —<br />
Drain<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
2XR<br />
2XM<br />
2XD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
2XP<br />
2XB<br />
2XA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
High Temp<br />
Vibration<br />
Drain<br />
2<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
2YM<br />
2YD<br />
—<br />
—<br />
—<br />
—<br />
2YB<br />
2YA<br />
—<br />
—<br />
—<br />
—<br />
Resistant<br />
Mercury<br />
Short w/<br />
Heater<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
2FE<br />
2FG<br />
2FF<br />
2FY<br />
2FR<br />
2FM<br />
2PY<br />
2PR<br />
2PM<br />
2FQ<br />
2FP<br />
2FB<br />
—<br />
—<br />
—<br />
2PQ<br />
2PP<br />
2PB<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Red 2FH 2FD 2PD 2FA — 2PA — —<br />
Tall w/<br />
SPDT<br />
2<br />
Yellow<br />
Red<br />
2GF<br />
2GH<br />
2GM<br />
2GD<br />
2QM<br />
2QD<br />
2GB<br />
2GA<br />
—<br />
—<br />
2QB<br />
2QA<br />
—<br />
—<br />
—<br />
—<br />
Heater<br />
R/B — — — — — 2QE — —<br />
Yellow 2HF 2HM 2RM 2HB — 2RB — —<br />
3 Red 2HH 2HD 2RD 2HA — 2RA — —<br />
R/B/B — — — — — 2RE — —<br />
Short w/<br />
Yellow 2IE 2IY 2SY 2IQ — 2SQ — —<br />
Heater<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
2IG<br />
2IF<br />
2IH<br />
2IR<br />
2IM<br />
2ID<br />
2SR<br />
2SM<br />
2SD<br />
2IP<br />
2IB<br />
2IA<br />
—<br />
—<br />
—<br />
2SP<br />
2SB<br />
2SA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Heater<br />
2<br />
Yellow<br />
Red<br />
2JF<br />
2JH<br />
2JM<br />
2JD<br />
2TM<br />
2TD<br />
2JB<br />
2JA<br />
—<br />
—<br />
2TB<br />
2TA<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
3AE<br />
3AG<br />
3AF<br />
3AY<br />
3AR<br />
3AM<br />
3KY<br />
3KR<br />
3KM<br />
3AQ<br />
3AP<br />
3AB<br />
32Q<br />
32P<br />
32B<br />
3KQ<br />
3KP<br />
3KB<br />
—<br />
—<br />
3KW<br />
3KS<br />
3KT<br />
3KK<br />
Red 3AH 3AD 3KD 3AA 32A 3KA 3KV 3KJ<br />
Tall<br />
SPDT<br />
2<br />
Yellow<br />
Red<br />
R/B<br />
3BF<br />
3BH<br />
—<br />
3BM<br />
3BD<br />
—<br />
3LM<br />
3LD<br />
—<br />
3BB<br />
3BA<br />
3BE<br />
34B<br />
34A<br />
34E<br />
3LB<br />
3LA<br />
3LE<br />
3LW<br />
3LV<br />
—<br />
3LK<br />
3LJ<br />
3LG<br />
High Temp<br />
Yellow 3CF 3CM 3MM 3CB 36B 3MB 3MW 3MK<br />
Mercury<br />
3 Red 3CH 3CD 3MD 3CA 36A 3MA 3MV 3MJ<br />
R/B/B — — — 3CE 36E 3ME — 3MG<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
3DE<br />
3DG<br />
3DF<br />
3DH<br />
3EF<br />
3EH<br />
3DY<br />
3DR<br />
3DM<br />
3DD<br />
3EM<br />
3ED<br />
3NY<br />
3NR<br />
3NM<br />
3ND<br />
3OM<br />
3OD<br />
3DQ<br />
3DP<br />
3DB<br />
3DA<br />
3EB<br />
3EA<br />
38Q<br />
38P<br />
38B<br />
38A<br />
31B<br />
31A<br />
3NQ<br />
3NP<br />
3NB<br />
3NA<br />
3OB<br />
3OA<br />
—<br />
—<br />
3NW<br />
3NV<br />
3OW<br />
3OV<br />
3NS<br />
3NT<br />
3NK<br />
3NJ<br />
3OK<br />
3OJ<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
29
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Housing<br />
Height<br />
& Options<br />
Short w/<br />
Drain<br />
<strong>Switch</strong><br />
Contacts<br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
Type 4<br />
Carbon<br />
Steel<br />
Type 4X<br />
Carbon<br />
Steel<br />
Type 7/9<br />
Cast Iron<br />
Type 4X<br />
Cast Alum<br />
1" NPT<br />
Type 4X<br />
Cast Alum<br />
M20 × 1.5<br />
Type 4X/7/9<br />
Cast Alum<br />
Group B<br />
Cast Iron<br />
Type 4X/7/9<br />
Group B<br />
Cast Alum<br />
Yellow — — 3UY — — 3UQ — —<br />
1<br />
Red<br />
Yellow<br />
—<br />
—<br />
—<br />
—<br />
3UR<br />
3UM<br />
—<br />
—<br />
—<br />
—<br />
3UP<br />
3UB<br />
—<br />
—<br />
—<br />
—<br />
Red — — 3UD — — 3UA — —<br />
Tall w/<br />
SPDT<br />
2<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
3VM<br />
3VD<br />
—<br />
—<br />
—<br />
—<br />
3VB<br />
3VA<br />
—<br />
—<br />
—<br />
—<br />
Drain<br />
R/B — — — — — 3VE — —<br />
Yellow — — 3WM — — 3WB — —<br />
3 Red — — 3WD — — 3WA — —<br />
R/B/B — — — — — 3WE — —<br />
Short w/<br />
Yellow — — 3XY — — 3XQ — —<br />
Drain<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
3XR<br />
3XM<br />
3XD<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
3XP<br />
3XB<br />
3XA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
High Temp<br />
Drain<br />
2<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
3YM<br />
3YD<br />
—<br />
—<br />
—<br />
—<br />
3YB<br />
3YA<br />
—<br />
—<br />
—<br />
—<br />
Mercury Short w/<br />
Yellow 3FE 3FY 3PY 3FQ — 3PQ — —<br />
Heater<br />
1<br />
Red<br />
Yellow<br />
3FG<br />
3FF<br />
3FR<br />
3FM<br />
3PR<br />
3PM<br />
3FP<br />
3FB<br />
—<br />
—<br />
3PP<br />
3PB<br />
—<br />
—<br />
—<br />
—<br />
Red 3FH 3FD 3PD 3FA — 3PA — —<br />
Tall w/<br />
SPDT<br />
2<br />
Yellow<br />
Red<br />
3GF<br />
3GH<br />
3GM<br />
3GD<br />
3QM<br />
3QD<br />
3GB<br />
3GA<br />
—<br />
—<br />
3QB<br />
3QA<br />
—<br />
—<br />
—<br />
—<br />
Heater<br />
R/B — — — — — 3QE — —<br />
Yellow 3HF 3HM 3RM 3HB — 3RB — —<br />
3 Red 3HH 3HD 3RD 3HA — 3RA — —<br />
R/B/B — — — — — 3RE — —<br />
Short w/<br />
Yellow 3IE 3IY 3SY 3IQ — 3SQ — —<br />
Heater<br />
Tall w/<br />
DPDT<br />
1<br />
Red<br />
Yellow<br />
Red<br />
3IG<br />
3IF<br />
3IH<br />
3IR<br />
3IM<br />
3ID<br />
3SR<br />
3SM<br />
3SD<br />
3IP<br />
3IB<br />
3IA<br />
—<br />
—<br />
—<br />
3SP<br />
3SB<br />
3SA<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Heater<br />
2<br />
Yellow<br />
Red<br />
3JF<br />
3JH<br />
3JM<br />
3JD<br />
3TM<br />
3TD<br />
3JB<br />
3JA<br />
—<br />
—<br />
3TB<br />
3TA<br />
—<br />
—<br />
—<br />
—<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
30 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
9.2 ATEX Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Housing<br />
Height<br />
& Options<br />
<strong>Switch</strong><br />
Contacts<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
ATEX XP<br />
Cast Iron<br />
3/4" NPT<br />
ATEX XP<br />
Cast Iron<br />
M20 × 1.5<br />
ATEX XP<br />
Cast Alum<br />
1" NPT<br />
ATEX XP<br />
Cast Alum<br />
M20 × 1.5<br />
ATEX IS<br />
Cast Alum<br />
1" NPT<br />
ATEX IS<br />
Cast Alum<br />
M20 × 1.5<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
AU5<br />
—<br />
—<br />
AK5<br />
AA9<br />
AAC<br />
AC9<br />
AH9<br />
AHC<br />
AK9<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
AU7<br />
AV5<br />
AV7<br />
AK7<br />
AL5<br />
AL7<br />
ACC<br />
AD9<br />
ADC<br />
AKC<br />
AL9<br />
ALC<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Mercury<br />
3<br />
Yellow<br />
Red<br />
A75<br />
A77<br />
A65<br />
A67<br />
AE9<br />
AEC<br />
AM9<br />
AMC<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
AW5<br />
AW7<br />
AY5<br />
AY7<br />
—<br />
—<br />
AD5<br />
AD7<br />
AO5<br />
AO7<br />
AB9<br />
ABC<br />
AF9<br />
AFC<br />
AG9<br />
AGC<br />
AJ9<br />
AJC<br />
AN9<br />
ANC<br />
AP9<br />
APC<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
BU5<br />
—<br />
—<br />
BK5<br />
BA9<br />
BAC<br />
BC9<br />
BH9<br />
BHC<br />
BK9<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
BU7<br />
BV5<br />
BV7<br />
BK7<br />
BL5<br />
BL7<br />
BCC<br />
BD9<br />
BDC<br />
BKC<br />
BL9<br />
BLC<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Dry Contact<br />
3<br />
Yellow<br />
Red<br />
B75<br />
B77<br />
B65<br />
B67<br />
BE9<br />
BEC<br />
BM9<br />
BMC<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
BW5<br />
BW7<br />
BY5<br />
BY7<br />
—<br />
—<br />
BD5<br />
BD7<br />
BO5<br />
BO7<br />
BB9<br />
BBC<br />
BF9<br />
BFC<br />
BG9<br />
BGC<br />
BJ9<br />
BJC<br />
BN9<br />
BNC<br />
BP9<br />
BPC<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
CU5<br />
—<br />
—<br />
CK5<br />
CA9<br />
CAC<br />
CC9<br />
CH9<br />
CHC<br />
CK9<br />
CAS<br />
CAL<br />
CAT<br />
C2S<br />
C2L<br />
C2T<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
CU7<br />
CV5<br />
CV7<br />
CK7<br />
CL5<br />
CL7<br />
CCC<br />
CD9<br />
CDC<br />
CKC<br />
CL9<br />
CLC<br />
CAX<br />
CBT<br />
CBX<br />
C2X<br />
C4T<br />
C4X<br />
Dry Contact<br />
3<br />
Yellow<br />
Red<br />
C75<br />
C77<br />
C65<br />
C67<br />
CE9<br />
CEC<br />
CM9<br />
CMC<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
CW5<br />
CW7<br />
CY5<br />
CY7<br />
—<br />
—<br />
CD5<br />
CD7<br />
CO5<br />
CO7<br />
CB9<br />
CBC<br />
CF9<br />
CFC<br />
CG9<br />
CGC<br />
CJ9<br />
CJC<br />
CN9<br />
CNC<br />
CP9<br />
CPC<br />
CDS<br />
CDL<br />
CDT<br />
CDX<br />
CET<br />
CEX<br />
C8S<br />
C8L<br />
C8T<br />
C8X<br />
C1T<br />
C1X<br />
DC Voltage<br />
Dry Contact<br />
Short<br />
Tall<br />
Short<br />
Tall<br />
SPDT<br />
DPDT<br />
1<br />
2<br />
3<br />
1<br />
2<br />
Yellow<br />
Yellow<br />
Yellow<br />
Yellow<br />
Yellow<br />
Yellow<br />
Yellow<br />
—<br />
DU5<br />
DV5<br />
D75<br />
—<br />
DW5<br />
DY5<br />
—<br />
DK5<br />
DL5<br />
D65<br />
—<br />
DD5<br />
DO5<br />
DA9<br />
DC9<br />
DD9<br />
DE9<br />
DB9<br />
DF9<br />
DG9<br />
DH9<br />
DK9<br />
DL9<br />
DM9<br />
DJ9<br />
DN9<br />
DP9<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Vibration<br />
Resistant<br />
Mercury<br />
Short<br />
Tall<br />
SPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
EU5<br />
EU7<br />
EV5<br />
EV7<br />
—<br />
—<br />
EK5<br />
EK7<br />
EL5<br />
EL7<br />
EA9<br />
EAC<br />
EC9<br />
ECC<br />
ED9<br />
EDC<br />
EH9<br />
EHC<br />
EK9<br />
EKC<br />
EL9<br />
ELC<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
3<br />
Yellow<br />
Red<br />
E75<br />
E77<br />
E65<br />
E67<br />
EE9<br />
EEC<br />
EM9<br />
EMC<br />
—<br />
—<br />
—<br />
—<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
31
9.2 ATEX Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Housing<br />
Height<br />
& Options<br />
<strong>Switch</strong><br />
Contacts<br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
ATEX XP<br />
Cast Iron<br />
3/4" NPT<br />
ATEX XP<br />
Cast Iron<br />
M20 × 1.5<br />
ATEX XP<br />
Cast Alum<br />
1" NPT<br />
ATEX XP<br />
Cast Alum<br />
M20 × 1.5<br />
ATEX IS<br />
Cast Alum<br />
1" NPT<br />
ATEX IS<br />
Cast Alum<br />
M20 × 1.5<br />
Vibration<br />
Resistant<br />
Mercury<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
EW5<br />
EW7<br />
EY5<br />
EY7<br />
—<br />
—<br />
ED5<br />
ED7<br />
EO5<br />
EO7<br />
EB9<br />
EBC<br />
EF9<br />
EFC<br />
EG9<br />
EGC<br />
EJ9<br />
EJC<br />
EN9<br />
ENC<br />
EP9<br />
EPC<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
FU5<br />
—<br />
—<br />
FK5<br />
FA9<br />
FAC<br />
FC9<br />
FH9<br />
FHC<br />
FK9<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
FU7<br />
FV5<br />
FV7<br />
FK7<br />
FL5<br />
FL7<br />
FCC<br />
FD9<br />
FDC<br />
FKC<br />
FL9<br />
FLC<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Herm. Sealed<br />
Dry Contact<br />
3<br />
Yellow<br />
Red<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
FW5<br />
FW7<br />
FY5<br />
FY7<br />
—<br />
—<br />
FD5<br />
FD7<br />
FO5<br />
FO7<br />
FB9<br />
FBC<br />
FF9<br />
FFC<br />
FG9<br />
FGC<br />
FJ9<br />
FJC<br />
FN9<br />
FNC<br />
FP9<br />
FPC<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
High Temp<br />
Mercury<br />
for B40<br />
Tall<br />
SPDT<br />
DPDT<br />
SPDT<br />
DPDT<br />
1 Yellow<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
LC9<br />
LF9<br />
LA9<br />
LB9<br />
LK9<br />
LN9<br />
LH9<br />
LJ9<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Dry Contact<br />
SPDT<br />
— — SA9 SH9 — —<br />
for B40<br />
DC Dry Contact<br />
Tall<br />
DPDT<br />
SPDT<br />
1 Yellow<br />
—<br />
—<br />
—<br />
—<br />
SB9<br />
SC9<br />
SJ9<br />
SK9<br />
—<br />
—<br />
—<br />
—<br />
for B40<br />
DPDT — — SF9 SN9 — —<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
UU5<br />
—<br />
—<br />
UK5<br />
UA9<br />
UAC<br />
UC9<br />
UH9<br />
UHC<br />
UK9<br />
UAS<br />
UAL<br />
UAT<br />
U2S<br />
U2L<br />
U2T<br />
Dry<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
UU7<br />
UV5<br />
UV7<br />
UK7<br />
UL5<br />
UL7<br />
UCC<br />
UD9<br />
UDC<br />
UKC<br />
UL9<br />
ULC<br />
UAX<br />
UBT<br />
UBX<br />
U2X<br />
U4T<br />
U4X<br />
Contact<br />
w/Gold Alloy<br />
3<br />
Yellow<br />
Red<br />
U75<br />
U77<br />
U65<br />
U67<br />
UE9<br />
UEC<br />
UM9<br />
UMC<br />
UCT<br />
UCX<br />
ULT<br />
ULX<br />
Contacts<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
UW5<br />
UW7<br />
UY5<br />
UY7<br />
—<br />
—<br />
UD5<br />
UD7<br />
UO5<br />
UO7<br />
UB9<br />
UBC<br />
UF9<br />
UFC<br />
UG9<br />
UGC<br />
UJ9<br />
UJC<br />
UN9<br />
UNC<br />
UP9<br />
UPC<br />
UDS<br />
UDL<br />
UDT<br />
UDX<br />
UET<br />
UEX<br />
U8S<br />
U8L<br />
U8T<br />
U8X<br />
U1T<br />
U1X<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
32 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
9.2 ATEX Enclosure Codes<br />
<strong>Switch</strong><br />
Type<br />
Housing<br />
Height<br />
& Options<br />
<strong>Switch</strong><br />
Contacts<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
Set<br />
Points<br />
Magnet<br />
Dot Color<br />
ATEX XP<br />
Cast Iron<br />
3/4" NPT<br />
ATEX XP<br />
Cast Iron<br />
M20 × 1.5<br />
ATEX XP<br />
Cast Alum<br />
1" NPT<br />
ATEX XP<br />
Cast Alum<br />
M20 × 1.5<br />
ATEX IS<br />
Cast Alum<br />
1" NPT<br />
ATEX IS<br />
Cast Alum<br />
M20 × 1.5<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
WU5<br />
—<br />
—<br />
WK5<br />
WA9<br />
WAC<br />
WC9<br />
WH9<br />
WHC<br />
WK9<br />
WAS<br />
WAL<br />
WAT<br />
W2S<br />
W2L<br />
W2T<br />
Herm. Sealed<br />
Dry Contact<br />
Tall<br />
SPDT<br />
2<br />
3<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
WU7<br />
WV5<br />
WV7<br />
W75<br />
W77<br />
WK7<br />
WL5<br />
WL7<br />
W65<br />
W67<br />
WCC<br />
WD9<br />
WDC<br />
WE9<br />
WEC<br />
WKC<br />
WL9<br />
WLC<br />
WM9<br />
WMC<br />
WAX<br />
WBT<br />
WBX<br />
—<br />
—<br />
W2X<br />
W4T<br />
W4X<br />
—<br />
—<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Yellow<br />
Yellow<br />
—<br />
WW5<br />
WY5<br />
—<br />
WD5<br />
WO5<br />
WB9<br />
WF9<br />
WG9<br />
WJ9<br />
WN9<br />
WP9<br />
WDS<br />
WDT<br />
WET<br />
W8S<br />
W8T<br />
W1T<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
XU5<br />
—<br />
—<br />
XK5<br />
XA9<br />
XAC<br />
XC9<br />
XH9<br />
XHC<br />
XK9<br />
XAS<br />
XAL<br />
XAT<br />
X2S<br />
X2L<br />
X2T<br />
Herm. Sealed<br />
Dry Contact<br />
Tall<br />
SPDT<br />
2<br />
Red<br />
Yellow<br />
Red<br />
XU7<br />
XV5<br />
XV7<br />
XK7<br />
XL5<br />
XL7<br />
XCC<br />
XD9<br />
XDC<br />
XKC<br />
XL9<br />
XLC<br />
XAX<br />
XBT<br />
XBX<br />
X2X<br />
X4T<br />
X4X<br />
w/ Gold<br />
3<br />
Yellow<br />
Red<br />
X75<br />
X77<br />
X65<br />
X67<br />
XE9<br />
XEC<br />
XM9<br />
XMC<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Yellow<br />
Yellow<br />
—<br />
XW5<br />
XY5<br />
—<br />
XD5<br />
XO5<br />
XB9<br />
XF9<br />
XG9<br />
XJ9<br />
XN9<br />
XP9<br />
XDS<br />
XDT<br />
XET<br />
X8S<br />
X8T<br />
X1T<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
2U5<br />
—<br />
—<br />
2K5<br />
2A9<br />
2AC<br />
2C9<br />
2H9<br />
2HC<br />
2K9<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Red 2U7 2K7 2CC 2KC — —<br />
High Temp<br />
Tall<br />
SPDT<br />
2<br />
Yellow<br />
Red<br />
R/B<br />
2V5<br />
—<br />
2V7<br />
2L5<br />
—<br />
2L7<br />
2D9<br />
2DC<br />
2DE<br />
2L9<br />
2LC<br />
29E<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Vibration<br />
Yellow 275 265 2E9 2M9 — —<br />
Resistant<br />
3 Red — — 2EC 2MC — —<br />
Mercury<br />
R/B/B 277 267 2EE 28E — —<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
2W5<br />
2W7<br />
2Y5<br />
2Y7<br />
—<br />
—<br />
2D5<br />
2D7<br />
2O5<br />
2O7<br />
2B9<br />
2BC<br />
2F9<br />
2FC<br />
2G9<br />
2GC<br />
2J9<br />
2JC<br />
2N9<br />
2NC<br />
2P9<br />
2PC<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Short<br />
1<br />
Yellow<br />
Red<br />
Yellow<br />
—<br />
—<br />
3U5<br />
—<br />
—<br />
3K5<br />
3A9<br />
3AC<br />
3C9<br />
3H9<br />
3HC<br />
3K9<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
Red 3U7 3K7 3CC 3KC — —<br />
Tall<br />
SPDT<br />
2<br />
Yellow<br />
Red<br />
R/B<br />
3V5<br />
—<br />
3V7<br />
3L5<br />
—<br />
3L7<br />
3D9<br />
3DC<br />
3DE<br />
3L9<br />
3LC<br />
39E<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
High Temp<br />
Yellow 375 365 3E9 3M9 — —<br />
Mercury<br />
3 Red — — 3EC 3MC — —<br />
R/B/B 377 367 3EE 38E — —<br />
Short<br />
Tall<br />
DPDT<br />
1<br />
2<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
Yellow<br />
Red<br />
—<br />
—<br />
3W5<br />
3W7<br />
3Y5<br />
3Y7<br />
—<br />
—<br />
3D5<br />
3D7<br />
3O5<br />
3O7<br />
3B9<br />
3BC<br />
3F9<br />
3FC<br />
3G9<br />
3GC<br />
3J9<br />
3JC<br />
3N9<br />
3NC<br />
3P9<br />
3PC<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.<br />
33
NOTES<br />
34 42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong>
NOTES<br />
42-683 <strong>Electric</strong> <strong>Switch</strong> <strong>Mechanisms</strong><br />
35
Service Policy<br />
Owners of <strong>Magnetrol</strong> may request the return of a control<br />
or any part of a control for complete rebuilding or replacement.<br />
They will be rebuilt or replaced promptly. Controls<br />
returned under our service policy must be returned by<br />
Prepaid transportation. <strong>Magnetrol</strong> will repair or replace<br />
the control at no cost to the purchaser (or owner) other<br />
than transportation if:<br />
1. Returned within the warranty period; and<br />
2. The factory inspection finds the cause of the claim<br />
to be covered under the warranty.<br />
If the trouble is the result of conditions beyond our control;<br />
or, is NOT covered by the warranty, there will be<br />
charges for labor and the parts required to rebuild or<br />
replace the equipment.<br />
In some cases it may be expedient to ship replacement<br />
parts; or, in extreme cases a complete new control, to<br />
replace the original equipment before it is returned. If<br />
this is desired, notify the factory of both the model and<br />
serial numbers of the control to be replaced. In such<br />
cases, credit for the materials returned will be determined<br />
on the basis of the applicability of our warranty.<br />
No claims for misapplication, labor, direct or consequential<br />
damage will be allowed.<br />
ASSURED QUALITY & SERVICE COST LESS<br />
5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com<br />
145 Jardin Drive, Units 1 & 2 • Concord, Ontario Canada L4K 1X7 • 905-738-9600 • Fax 905-738-1306<br />
Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93<br />
Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317<br />
Copyright © 2012 <strong>Magnetrol</strong> <strong>International</strong>, Incorporated. All rights reserved. Printed in the USA.<br />
Return Material Procedure<br />
So that we may efficiently process any materials that are<br />
returned, it is essential that a “Return Material<br />
Authorization” (RMA) number be obtained from the<br />
factory, prior to the material’s return. This is available<br />
through your <strong>Magnetrol</strong> local representative or<br />
by contacting the factory. Please supply the following<br />
information:<br />
1. Company Name<br />
2. Description of Material<br />
3. Serial Number<br />
4. Reason for Return<br />
5. Application<br />
Any unit that was used in a process must be properly<br />
cleaned in accordance with OSHA standards, before it is<br />
returned to the factory.<br />
A Material Safety Data Sheet (MSDS) must accompany<br />
material that was used in any media.<br />
All shipments returned to the factory must be by prepaid<br />
transportation.<br />
All replacements will be shipped F.O.B. factory.<br />
BULLETIN: 42-683.16<br />
EFFECTIVE: July 2012<br />
SUPERSEDES: June 2011