Summary:
A decent enough product at this price point, but I was hoping it would last a little longer. It might for constant loads (LED lights, etc.).
One star off for failing after only a year on low load.
One star off for mode of failure.
Thermal management seems acceptable for lower loads (15-20A)
Voltage is reasonably consistent under various loads.
Fan noise is higher pitched and constant, but my AC is louder.
It should be understood that I realized this was a cheap, knock-off product, so I didn't expect it to run at full load or to be in service for an extended period. An on-brand product would have received a very poor review for this type of performance and mode of failure, but on-brand products are a whole lot more expensive.
Full Review:
This failed one year and change after purchase. I have generally run it at around a 50% load cycle on a 3D printer that draws a maximum of 10 amps and a typical load of 6 to 8 amps. The supply didn't seem to have trouble running that load and rarely became even moderately warm (which is as it should be at 1/3 rated load).
To comment specifically on fan noise, the fan is unnoticeable if my AC is on, but is otherwise a constant hum. The fan runs as expected at this price point, but it does have a bit of a whine to it.
It died today. The fan doesn't spin, so the 12V bus appears to be completely down. Maybe it wasn't meant for such frequent use, but I thought it would be fine at 1/3 load. That was disappointing. I've had it on a UPS, so surges or line noise weren't factors.
The real bummer was that it failed in the middle of a print, which was a bit inconvenient.
Nothing smells of smoke and nothing looks burnt. Initially I couldn't see the issue, but it looks as though one or both of the mains capacitors may have gone bad. I'm glad they didn't pop. One capacitor doesn't register as having any capacitance and the other measures at half its rated value. One came close to blowing (the top of the cap has begun to bulge), so perhaps some style of protection circuitry cut off mains power internally, or maybe something else broke before the capacitors did.
This is an inexpensive variant manufactured overseas (China, specifically) using knock-off components, etc. etc. so I didn't expect it to run at rated capacity or even 2/3 capacity, but I was hoping that since I was at 1/3 load rating it would last a little longer. You get what you pay for.
It seems like other people haven't had my specific issue with this supply based on the top ratings. My (untested) theory is that my printer was a highly variable load which put more strain on the internal components than most comparatively constant loads which would typically be hooked up (LED lighting, for instance).
One important note is on the cooling on this system. It has a fan and the proper venting throughout to make the fan useful for cooling the main board. The serious heat generating components are screwed into a heat sink which in turn is attached to the case. There's a thermal pad between the heat sinks and the case. The amount of thermal compound between the heat sinks and the components, however, is not particularly impressive, mainly because it has been over-applied, which doesn't make for ideal heat transfer (though it's better than one's I've seen that don't have any thermal compound). The heat sinks are also a little smaller than I would prefer to see, but only by a little and at least it has one that's somewhat close to the correct size. While it may handle its rated 30A for a minute or two, I don't know that I'd trust it with more than a 15-20A load for extended periods.
I'll update this review once I get around to replacing the caps. The internals are likely fine aside from the caps, but it's just a question of how many caps I need to replace aside from the two mains ones.
Oh, one last thing: I pulled this open because it was out of warranty and I know what I'm doing. I wouldn't recommend that most folks do that for safety reasons. So, don't do something silly.
Would I recommend it?
If you have a constant, reasonably low load (small motors, LED lights, etc) that aren't too sensitive and have a low replacement cost, this probably works great and is low-cost.
If you are willing to replace the caps, then it will likely last longer and could possibly be used for higher loads.
If you need a reliable power source for medium or high loads (like for a 3D printer), then find something on-brand to use as-is or modify (like an xbox power supply).
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Product Description
360W 12V 30A DC Universal Regulated Switching Power Supply
High-performance Transformers
Pure Copper Inductors
- AC 110V-220V Switch
- DC 12V 30A
- Aluminum Shell
- IN-DOOR USE ONLY!
Wide Application
- Wide input voltage range, steady and precise output voltage.Great power transformer for electronic equipment, Led Strip Light, home appliance.
High-Quality RAW Material
Maximum Power：360Watts
- Input Voltage: AC110V-220V
- Output Voltage: DC 12V
- Output Current: 30A
- Shell Material: Aluminum case
- Safety Compliance: CCC / Rohs
- Working Temperature: 0~40 ℃/0~104 ℉ S
- torage Temperature: -20~60℃/-68~140℉ Am
- bient Humidity: 0~95% Non-Condensation
Safe to Use
- High effective, reliability with industry standards Bu
- ilt-in over voltage, over current, and short circuit protection
Note:
1. In-door use only, for this switch power supply is not waterproof.
2. 110V/230V is selected by switch. Before power on please check input voltage avoiding damage.
3. The fan will work to dissipate heat.
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| DC 36V to 12V 10A | DC 48V to 12V 10A | 24V 14.6A 350W | DC 30W 12V2.5A | DC 12V 5A | |
| Step Down Converter | ✓ | ✓ | ✓ | ✓ | ✓ |
| DC 12V | ✓ | ✓ | DC 24V | ✓ | ✓ |
| Waterproof | ✓ | ✓ | Non-waterproof | ✓ | Non-waterproof |
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Customer Review: Great Little Power Supply
Lee Christopher Evans
Customer reviews
high revving fan and replace it with something like: http
Reviewed in the United States on July 23, 2015
This power supply produces current. The reason I didn't give this 5 stars is that used for an interior LED lighting project, it is way too noisy. I mean unacceptable unless you are prepared to hear a DC 10 take off when you turn on your LED lighting. I put these supplies in a cabinet of a kitchen remodel and even with the door closed it was unacceptably loud. If you are a hobbyist using this to power circuits it would work. To make it work for an interior lighting project plan to modify it by removing the puny, undersized, high revving fan and replace it with something like : http://www.amazon.com/gp/product/B00NEMGCRQ?psc=1&redirect=true&ref_=oh_aui_detailpage_o07_s00 and install something like the attached photos. I added a filter assembly to keep it cleaner for a longer period of time.
Reviewed in the United States on July 23, 2015
Images in this review
Top reviews from the United States
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Reviewed in the United States 🇺🇸 on October 21, 2021
Size: 12V 30AVerified Purchase
Depending don't like...better packaging maybe? There still ok.
By R. D. Harden on October 21, 2021
I build power supplies for amps and radios for use in communication. ( cb,ham radios).there as dependable as the more expensive ones.quiet low noise.have purchased at least 100 30 amp or more.had only a couple bad ones.which were replaced promptly. Only complaint there always bent on end.
By R. D. Harden on October 21, 2021
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Top reviews from other countries
Randy Reece
Works but very noisy, not sure it puts out the rated current
Reviewed in Canada 🇨🇦 on November 24, 2021Size: 12V 30AVerified Purchase
Robert Bouchard
Marche bien
Reviewed in Canada 🇨🇦 on September 30, 2020Size: 12V 30AVerified Purchase
