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Jaycar
Laboratory
0-15VDC 0-40A Regulated Switchmode Laboratory Power Supply

1 Year Warranty
A good lab power supply is a must-have for any serious hobby bench. This one provides the flexibility of wide voltage range and current limiting. A large backlit LCD provides feedback. Thoughtful design makes this unit very functional. While it's capable of up to 40A, if you're only using up to 5A, handy banana sockets are provided on the front panel. If you need up to 40A, heavy duty binding posts are provided at the rear of the unit. The lightweight switchmode design means you can move it around as required, while voltage ripple is kept below 100mV. Mains power cable included. 

Features:
- 0-15V variable output voltage
- 0-40A variable current limiting
- Overload and over temperature protected
- Input: 220V-240V @ 50Hz
- Fuse: 250V @ 6A
- Variable Output Voltage: 0-15V
- Variable Output Current Limiting: 0-40A
- Ripple & Noise (Peak-Peak) Voltage: 100mV
- Protections: Overload, Over Temperature

Width:336.0 mm
Height:87.0 mm
Depth:214.0 mm
Weight:2.9 kg

0-15VDC 0-40A Regulated Switchmode Laboratory Power Supply

Cat. No: MP3091
3.9(7)
$369
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Qty 1-2
$369.00 / unit
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$329.00 / unit
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Qty 6+
$329.00 / unit
30-Day Returns
Australian Stock
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Customer Reviews

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It does list the load regulation (Post by IanH)

JockJuly 2025

It has the load regulation in the manual: PowerTech MP3091 Load Regulation The MP3091 lab power supply’s load regulation specifies how much the output voltage changes when the output current varies from no‐load to full‐load. According to the official MP3091 datasheet: Load Regulation: ±0.01% of V out + 3 mV This means that as you sweep the load from 0 A to 40 A, the output voltage will shift by no more than 0.01% of the programmed voltage, plus an additional 3 mV.

Yes, I recommend this product.
Helpful?

Landfill

IanHMay 2024

The documentation doesn't even have a number for 'load regulation', which is the most important spec for a lab power supply, which means it must be terrible.

No, I don't recommend this product.
Helpful?

Great lab power supply

Tech-addictDecember 2023

Ive owned this item for many months and used it on multiple projects, from basics testing of kits lighting etc, to more indepth Automotive circuit testing with current regulation, and ecu's

Yes, I recommend this product.
Helpful?

The best purchase ever

MehdiDecember 2023

It is the only one, the best purchase I have ever made in my entire life. I haven't had anything better, and there won't be anything better than this one. I cannot describe how happy I am to own this product finally.

Helpful?

crackling noise

letsdancemusicSeptember 2025

bought 3 had to get 1 replaced as it was making crackling noises when adjusting the voltage knob the 2nd unit does the same and current flickers all over the place

No, I don't recommend this product.
Helpful?

when you need that extra KICK

theflashJanuary 2024

ive had this unit for 6 months and can not fault it, ive used it to power lighting, motors, pumps and test equipment

Yes, I recommend this product.
Helpful?

Great supply for those large loads

JimiJanuary 2024

Great supply for running items with a larger load.

Yes, I recommend this product.
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