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Extech 382276 Switching Mode 600W 230V DC Power Supply

4.0 4.0 out of 5 stars 41 ratings
$460.99
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600W Switching Mode DC Power Supply (230V)
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Purchase options and add-ons

  • Thermometer with dual display, relative and programmable high/low audible alarms
  • Temperature range:-328 to 2498-Degrees F (-200 to 1370-Degrees C) for Type K and-328 to 1922-Degrees F (-200 to 1050-Degrees C) for type J
  • Rugged water resistant design with protective holster/stand
  • Large 2000 count LCD displays T1, T2 or T1-T2, plus elapsed time
  • Data hold, relative, MIN/MAX/AVG and hold functions
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 8.5 x 3.5 x 7.9 inches; 5.71 Pounds
  • Item model number ‏ : ‎ 382276
  • Date First Available ‏ : ‎ February 19, 2010
  • Manufacturer ‏ : ‎ Extech
  • ASIN ‏ : ‎ B00395QST0
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.0 4.0 out of 5 stars 41 ratings

Product Description

From the Manufacturer

Switching Mode DC Power Supply has an adjustable output of 0 to 30V/ 20A with two user-defined presets and one 13.8V/20A factory preset. It features dual LED displays, high RFI imunity, excellent EMI, and a Thermostatic Control Fan. Additional features include over-voltage, over-temperature, and short circuit protection. Operates at 220V, 50/60Hz and comes complete with AC power cord.

Top Brand: Extech

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Customer reviews

4 out of 5 stars
4 out of 5
41 global ratings

Customers say

Customers like the quality, performance, value, and supply of the system power device. They mention that it's a solid power supply, works well, and is excellent bang for the buck. Some appreciate the high current capability and say it'll give you 20 amps of power.

AI-generated from the text of customer reviews

8 customers mention8 positive0 negative

Customers are satisfied with the quality of the system power device. They mention that it has a solid build, is reliable, and is a good quality power supply for the price. Some say that the rear binding posts are solid, but they don't have a through hole for smaller sizes.

"...There's no output switch. The rear binding posts are solid, but they don't have a through hole for smaller gauge wire...." Read more

"...Much higher quality than the "cheap" ones (just stay away from any rebranded import ones that aren't backed by a real company)." Read more

"...All negative points aside, the unit seemed really solid...." Read more

"...I'm also very happy with the build quality, an issue that seems to plague products of a lesser price...." Read more

6 customers mention6 positive0 negative

Customers are satisfied with the performance of the system power device. They mention that it works well, the current limit works well and that the power supply seems to function fine. Some say that the display is not working.

"...Current limit works well, and it'll show you the voltage that it limits to when it's in CC mode...." Read more

"...I use this for microcontrollers and single board computers. It works well when all I want is to power a Raspberry pi zero with not much attached." Read more

"...The power supply seemed to function fine and both the Volt and Amp control dials limited voltage and current respectively, but the amp display was..." Read more

"I like it, and it works very well...." Read more

6 customers mention6 positive0 negative

Customers are satisfied with the value of the power supply. They mention that it is a good quality power supply for the price. Some customers also say that the design could be better.

"This is a good quality power supply for the price...." Read more

"...I gave it 3 stars. It's a decent unit, but the design could be better. (fiddly controls? well, at least give me a "lock" switch.)..." Read more

"...This does everything I had hoped and for a reasonable price...." Read more

"Awesome supply for the money. It will really give you 20 amps of power. The only draw back is waiting for the self test on start-up." Read more

3 customers mention3 positive0 negative

Customers are satisfied with the power supply. They mention that it is perfect for a high current supply, has useful reading of voltage and current values, and provides 20 amps of power. Some say that it's the best high current bench supply out there.

"...easy to adjust to within .1 v above 3 volts, and that's perfect for a high current supply...." Read more

"A good power supply, with useful reading of voltage and current values...." Read more

"Awesome supply for the money. It will really give you 20 amps of power. The only draw back is waiting for the self test on start-up." Read more

Top reviews from the United States

Tom
5.0 out of 5 stars This is a solid supply. Review of the 600w - 30v/20a model
Reviewed in the United States on July 28, 2023
Style: 600W Switching Mode DC Power Supply (120V)Verified Purchase
Check the reviews when you're looking at this listing, because the different supplies are different.

This unit is solid. It's a single voltage, high current supply. The voltage and current adjustment is digital, even though it's done with a turning knob. It's easy to adjust to within .1 v above 3 volts, and that's perfect for a high current supply. Current limit works well, and it'll show you the voltage that it limits to when it's in CC mode. For testing things designed to run on nominal 12VDC power, it's pretty perfect.

The only negatives are a bit minor. There's no output switch. The rear binding posts are solid, but they don't have a through hole for smaller gauge wire. For the power and quality, I think this is the best high current bench supply out there. I'm in no way sponsored...paid full price just like everyone else.
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TechMage
5.0 out of 5 stars Fine for what it is.
Reviewed in the United States on July 18, 2017
Style: 30V/1A Single Output DC Power SupplyVerified Purchase
I purchased this supply a few years ago. It has worked as intended. I wish I had gone for a 5A supply though. 1A can be useful for some low power applications but it might be worth looking for a slightly more powerful unit. I use this for microcontrollers and single board computers. It works well when all I want is to power a Raspberry pi zero with not much attached.
One person found this helpful
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Sven Kratz
1.0 out of 5 stars One Star
Reviewed in the United States on July 2, 2014
Style: 600W Switching Mode DC Power Supply (230V)Verified Purchase
Don't buy this if you're based in 110V country, e.g., USA. Accepts only 240V as input.
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Flyboyyy
5.0 out of 5 stars This is a good quality power supply for the price
Reviewed in the United States on April 19, 2017
Style: 600W Switching Mode DC Power Supply (120V)Verified Purchase
This is a good quality power supply for the price. Still an import power supply, but at least backed up by an American based company with actual support. We have a number of these and use them every day with good success. Much higher quality than the "cheap" ones (just stay away from any rebranded import ones that aren't backed by a real company).
One person found this helpful
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TwistedPretzel
3.0 out of 5 stars Okay, but was hoping it was a little better...
Reviewed in the United States on March 3, 2011
Style: 18V/3A Single Output DC Power SupplyVerified Purchase
Bought this unit thinking that it would be good to have for electronic experimenting. When it arrived, I plugged it in, the screen lit up, but the lower display (for Amps) was completely blank. The power supply seemed to function fine and both the Volt and Amp control dials limited voltage and current respectively, but the amp display was DOA.

I emailed Extech and got two different answers from tech support. One said I had to send it back to Amazon for an exchange (ugh, really?) and the other said I had to send it in and pay $50 to fix it. (seriously? I just bought this thing!) Neither sounded like great options, so I just sent it back to Amazon as "defective" and got a refund instead.

For the few days that I did have it, I was able to make a few observations:
- The control dials are kinda sensitive. It's easy to nudge the voltage control and have the voltage change 0.5 volts.
- The readouts aren't very precise: 0.1 volt and 10mA increments. (0.01v and 1ma increments would be nicer.)
- For example, you could dial up 2.0v, but really be at something like 2.045 volts.
- No "lock" feature. Since the control dials are so "fiddly", it would be nice to be able to dial-up a voltage, then push a button to "lock" the voltage in place.

All negative points aside, the unit seemed really solid. Voltage out seemed steady (although I didn't have a scope, so I can't tell you if their ripple specs are accurate or not.)

I gave it 3 stars. It's a decent unit, but the design could be better. (fiddly controls? well, at least give me a "lock" switch.) Maybe I was just unlucky getting a malfunctioning display, but maybe their quality control isn't as good as it should be.
6 people found this helpful
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Aaron Blood
4.0 out of 5 stars Nice but wish the amp output was higher
Reviewed in the United States on February 21, 2016
Verified Purchase
I like it, and it works very well. ...I wish the limiting circuit went up to 20 amps, as opposed to 3 amps, but it is pretty clearly stated in the product description so I can't really complain too much. I will need to get another power supply with a higher amp output. Probably an 18v 20amp model, which is a bit pricier but not too much more. Also, it would've been nice if they gave a little more instruction on operation. This was my first bench power supply and took me awhile to figure out how to set the amp limiter. ...at first it made no sense, as I could spin the amp knob and it appeared as though nothing was happening. After playing with it and searching online a bit, I found out you set the volts first, then you short the red black connectors by touching or clamping them together. Then you will see the amps on the digital display and can dial in what you need. Just me being a novice I suppose, didn't realize these things were designed such that you could safely short them like that.
3 people found this helpful
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Michael G. Sklar
5.0 out of 5 stars Extech POWER SUPPLY
Reviewed in the United States on October 17, 2012
Style: 600W Switching Mode DC Power Supply (120V)Verified Purchase
This was the right choice for my needs.
OUTPUT 1 (from back) ranges from 1-30V and from 1-20 amps. OUTPUT 2 auxiliary is in the front and has 1-30V but 5A max.
There are 3 user-defined presets of voltage and amps: initially set by the factory but user-settable.
Knobs allow coarse and fine adjustment. It also has a remote control feature to set V&A and ON/OFF.
3 people found this helpful
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The Masked Marauder
5.0 out of 5 stars Excellent bang for the buck with respect to features and quality
Reviewed in the United States on March 29, 2015
Style: Quad Output DC Power SupplyVerified Purchase
So far, I'm quite pleased. This does everything I had hoped and for a reasonable price. I'm also very happy with the build quality, an issue that seems to plague products of a lesser price. If this seems a little more than you are willing to pay, I feel confident you'll be glad to spent the extra $.
2 people found this helpful
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Top reviews from other countries

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Peter M
1.0 out of 5 stars Not Electrically approved for sale or use in Canada
Reviewed in Canada on September 11, 2023
Style: 30V/1A Single Output DC Power SupplyVerified Purchase
No CSA, cUL or other recognized electrical approval
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Alfredo R.
5.0 out of 5 stars Buena relación precio calidad
Reviewed in Mexico on January 9, 2020
Style: 600W Switching Mode DC Power Supply (120V)Verified Purchase
Se puede controlar de manera externa, se puede usar en algunos proyectos de automatización. Es robusta, y a buen precio
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Mr.M
3.0 out of 5 stars Northern American plug and voltage (switchable)
Reviewed in the United Kingdom on September 2, 2018
Verified Purchase
Seems well made and well calibrated but had a couple of issues, ships without a uk plug and no backlight on the lcd.
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LD
5.0 out of 5 stars Great value!!
Reviewed in Canada on August 29, 2015
Style: 600W Switching Mode DC Power Supply (120V)Verified Purchase
I love this product! DigiKey carries inferior DC power supplies (lower power and fewer features) for the same price or greater!
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SueLynne
5.0 out of 5 stars Five Stars
Reviewed in Canada on June 25, 2016
Style: 600W Switching Mode DC Power Supply (120V)Verified Purchase
Arrived in time. Works well
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