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48V DC 7.3A 350W Regulated Switching Power Supply

4.2 out of 5 stars 47 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
Brand Genssi
Item dimensions L x W x H 8.46 x 1.97 x 4.53 inches
Output Current 7.3 Amps
Output Voltage 48 Volts
Output Wattage 350 Watts

Additional Details

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Product information

Product Dimensions 8.46 x 1.97 x 4.53 inches
Item Weight 2.1 pounds
ASIN B005CLBZRO
Item model number FBA_S-350-48
Customer Reviews
4.2 out of 5 stars 47 ratings

4.2 out of 5 stars
Is Discontinued By Manufacturer No
Date First Available July 14, 2011
Manufacturer Genssi

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GENSSI 48V DC 7.3A 350W Regulated Switching Power Supply

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Customer reviews

4.2 out of 5 stars
47 global ratings

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Customers say

Customers find the power supply works well and provides ample power, with one mentioning it runs two radio units flawlessly. The product receives positive feedback for its quality and value for money. However, customers report issues with the unit not turning on and being very noisy when the fan is on. One customer notes that the output is set at 48V.

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FunctionalityPower supplyQualityValue for moneyVoltageFan powerNoise level
18 customers mention "Functionality"18 positive0 negative

Customers report that the power supply works well, with one mentioning it runs two radio units flawlessly.

"I've had the 48V unit for a week. It works well so far, giving 48.2 Volts right out of the box...." Read more

"...It works perfectly for what I am doing with it- running a CNC machine...." Read more

"...down as far as it would go to produce about a 43V output and the unit works great, the fan comes on every now and then to cool the PS, would highly..." Read more

"...the greatest right out of the packaging, but has been working fine for my intermittent use of it...." Read more

11 customers mention "Power supply"9 positive2 negative

Customers find that the power supply provides ample quality power and is powerful.

"...Power quality seems to be good (low ripple) for the price. I have used it in Sweden and the US...." Read more

"I've only had this unit installed for about a week. It provides ample quality power to drive my 25 PoE cameras..." Read more

"...It is cool, powerful and almost everything i expected out of a power supply, it is however very noisy with the fan on...." Read more

"just one thing, it doesn't have the negative voltage, but it's also good DC power...." Read more

9 customers mention "Quality"9 positive0 negative

Customers find the power supply to be of good quality.

"...was everything that I wanted; the right size, correct voltage, and good quality...." Read more

"Great product. I used it to charge a 48 volt telco battery before I put the battery on line...." Read more

"Great product I have had this for a while now and use it to power around 285W worth of LED's in my shop." Read more

"product received as advertised and in good order. Looks well made, but has not been tested yet." Read more

6 customers mention "Value for money"6 positive0 negative

Customers find the power supply offers good value for money.

"...Overall it is good for the price." Read more

"...it's not easy to find a DC power with such high value, and the price is really cheap." Read more

"Best bang for your buck for an off the shelf power supply...." Read more

"...The Price was terrific and shipped fast I would recommend this product to my cnc forum member" Read more

3 customers mention "Voltage"3 positive0 negative

Customers are satisfied with the power supply's voltage output, with one mentioning it is set at 48V.

"The output is set at 48V. The adjustment trim pot was glued in place so I broke it free and adjusted the output voltage to 50V. So far I have only..." Read more

"This power supply was everything that I wanted; the right size, correct voltage, and good quality...." Read more

"voltage is accurate..." Read more

7 customers mention "Fan power"0 positive7 negative

Customers report issues with the power supply's fan, with multiple customers noting that the unit would not turn on, and one customer mentioning that the fan is on more often than off.

"...The box got a little warm, but the fan did not come on, which is fine. It is supposed to come on when the temperature rises too much...." Read more

"...up until the over-temperature protection kicked in and it would stop providing power. By that time the power supply was nearly too hot to touch." Read more

"...load (my power meter shows a max 95 watt AC load), the fan is on more often than off...." Read more

"Had to return a unit before getting a good model. The first unit simply did not turn on. The second unit has not hiccuped whatsoever...." Read more

3 customers mention "Noise level"0 positive3 negative

Customers report that the power supply is very noisy with the fan on.

"...The fan part was loose and rattling around inside. The 48V version arrived with the fan intact, but the fan would not run...." Read more

"...everything i expected out of a power supply, it is however very noisy with the fan on...." Read more

"BEWARE: Very noisy fan..." Read more

Works great for my torchmate cnc
5 out of 5 stars
Works great for my torchmate cnc
3ish years later it's still working great to power my signal generator/gecko driver's for my torchmate plasma table.
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Top reviews from the United States

  • carissa
    5.0 out of 5 stars Works as expected
    Reviewed in the United States on February 11, 2014
    Verified Purchase
    The output is set at 48V. The adjustment trim pot was glued in place so I broke it free and adjusted the output voltage to 50V. So far I have only used it for about 50 watts of power. Power quality seems to be good (low ripple) for the price. I have used it in Sweden and the US. Seems to be efficient and the fan does turn on when it begins to heat up.

    Overall it is good for the price.
    One person found this helpful
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  • Amazon Customer
    4.0 out of 5 stars Works well once you get an AC input cord.
    Reviewed in the United States on September 20, 2016
    Verified Purchase
    I've had the 48V unit for a week. It works well so far, giving 48.2 Volts right out of the box.

    I'm not liking that there's not a safe plug in 110V cord supplied or even a connector for it. So, don't forget to buy or cut up an existing 3 wire AC cord for the AC power input (the right 3 connections on the back of the unit). In the wire I cut the end off of, the green wire goes to the ground (the symbol with the parallel lines), the white wire goes to the connector marked N (neutral) and the Black wire goes to the L connector (Live). Make sure you don't strip too much insulation off the ends of the wires, as you will have live 115Volts AC bare wires in close proximity that could shock you or short easily.

    I've only used my unit for about a half hour so far with a relatively small 48DC load of about 0.3 amps. The box got a little warm, but the fan did not come on, which is fine. It is supposed to come on when the temperature rises too much. Hopefully it would if I increased the load.
    2 people found this helpful
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  • Keith J. Milligan
    1.0 out of 5 stars I bought both the 36V and 48V versions of this ...
    Reviewed in the United States on July 2, 2015
    Verified Purchase
    I bought both the 36V and 48V versions of this power supply. The 36V came with a broken fan out of the box. The fan part was loose and rattling around inside. The 48V version arrived with the fan intact, but the fan would not run. The power supply would heat up until the over-temperature protection kicked in and it would stop providing power. By that time the power supply was nearly too hot to touch.
    4 people found this helpful
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  • TRUMP WON
    3.0 out of 5 stars BEWARE: Very noisy fan
    Reviewed in the United States on October 23, 2016
    Verified Purchase
    I've only had this unit installed for about a week. It provides ample quality power to drive my 25 PoE cameras (each pull about 7 watts at max power). Despite the PS not being anywhere near full load (my power meter shows a max 95 watt AC load), the fan is on more often than off. That wouldn't be a problem if it didn't sound like a hair dryer set to max.

    Unfortunately, I have this PS mounted in an spare bedroom where the constant cycling is very noticeable and distracting. I wish there was a way to slow the fan down, or disable it. For now, I will be looking for a replacement PS.
    One person found this helpful
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  • Sam Miller
    5.0 out of 5 stars Has not skipped a beat. Pure power for your "Quiet Cut Spindle" for the Shapeoko CNC.
    Reviewed in the United States on October 29, 2015
    Verified Purchase
    Had to return a unit before getting a good model. The first unit simply did not turn on. The second unit has not hiccuped whatsoever.
    The seller very quickly sent me a new unit. I guess when ordering, just assume there is a risk receiving a defective unit, but the seller will easily replace for you.

    I use this for my Shapeoko 2 spindle motor with the 300watt ER-11a collet.
    One person found this helpful
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  • RH
    4.0 out of 5 stars A good product at a fair price.
    Reviewed in the United States on September 12, 2013
    Verified Purchase
    This power supply was everything that I wanted; the right size, correct voltage, and good quality. It works perfectly for what I am doing with it- running a CNC machine.
    You do need to supply your own power cord, but almost everyone has something around that they can use, or you could cut the cord off of your wife's toaster- what's more important, food or shop tools?
    It would be nice if this had an on/off, lighted rocker switch on it, but I guess that's just an additional expense.
    3 people found this helpful
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  • Dj Nexxus
    5.0 out of 5 stars Great CNC Power supply
    Reviewed in the United States on July 28, 2015
    Verified Purchase
    Works without an issue! I use this with 3 Saintsmart Stepper Drivers set to 2A each totaling 6A for all three motors, and this unit works great! I turned the voltage adjustment pot down as far as it would go to produce about a 43V output and the unit works great, the fan comes on every now and then to cool the PS, would highly recommend this!
    2 people found this helpful
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  • Damir O.
    1.0 out of 5 stars yellow post it says "does not turn on"
    Reviewed in the United States on July 27, 2017
    Verified Purchase
    when i opened the "new" box i saw a yellow post it note that said "does not turn on!" i was concerned. the unit did not turn on and neither did the second unit i purchased. save yourself time and money folks . go with the Drock 48v dc power supply instead it is more money but at least they work. this seller is just sending back out returned product without even checking the issues.
    Customer image
    Damir O.
    1.0 out of 5 stars
    yellow post it says "does not turn on"

    Reviewed in the United States on July 27, 2017
    when i opened the "new" box i saw a yellow post it note that said "does not turn on!" i was concerned. the unit did not turn on and neither did the second unit i purchased. save yourself time and money folks . go with the Drock 48v dc power supply instead it is more money but at least they work. this seller is just sending back out returned product without even checking the issues.
    Images in this review
    Customer imageCustomer image
    3 people found this helpful
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