Mean Well LRS-350-48 350.4W 48V 7.3 Amp Single Output Switchable Power

I was having issues with my Reolink 16 Ch. POE NVR system. Sometimes when I would turn on or off my indoor lights (on a separate powder breaker) the factory power supply would cut out causing the NVR to reboot. Not sure why this was happening as I have a house built in 2019. I figured the factory power supply had an issue with a slight power fluctuation? I even purchased a UPS with a line conditioner that was rated for 20x the power the NVR drew but that did not fix the issue. This power supply has completely remedied the issue and my NVR runs smooth (I've tested everything in the house as even turning on and off my well VFD would cause it to cut out before).

When I asked around in HiFi communities about using this power supply with my audio amplifier, many were hesitant. It’s widely accepted that linear power supplies are the best option for audio equipment, but they are very expensive. My amplifier offered the choice of coming with a switching power supply or none at all. I decided to take a chance and pair it with the Mean Well power supply, and I couldn’t be happier. After a month of use, I’ve experienced no issues—there’s absolutely no hiss, even when the music stops and the amp is turned to the max. The power supply remains cool, never getting even lukewarm. For me, this works perfectly, and it’s a cost-effective solution.

Meanwell supplies are some of the better power supplies that can be obtained. This is no exception. I needed this supply to replace a different one used to power a starlink dish. The starlink dish uses PoE++ @48V-52V and up to 150W. I tried using a cheaper supply but it lasted only a couple of months. I replaced it with a different (but cheap as well) supply that lasted 4 weeks. I should have simply used this supply from the outset.

I'm using a few of these to power some large-ish stepper motor drivers, which usually pull no more than 2 amps. Overall, these PSUs have worked fine, but I should point out that I managed to kill one of them when the load itself generated a large power spike, and I guess the PSU's OVP failed to protect itself. I had been fighting an issue where the stepper driver seemed to be triggering its own overload protection, and this caused a large voltage spike on its input rails, which then back-feeds to the output rails of the PSU. This is certainly no fault of the PSU, though it did usually cause the PSU to trigger its own over-voltage protection and go into shutdown until I power cycled it. From the perspective of this PSU, that's working as intended... Except one time, I guess the PSU's OVP didn't work, and it killed the PSU. I didn't have an oscilloscope or multimeter attached to the power rail at the time of the failure, so I'm not sure how large of a voltage spike it experienced, but most of the previous voltage spikes that didn't kill it were around 70V... so I'm guessing north of that. I made some effort to disassemble and diagnose the failure, and I *think* I traced it down to the switching regulator IC. But these things are cheap enough that I didn't bother fixing it and I just ordered another one.

Does exactly what it’s to do. Stays fairly cool even under pretty heavy load. If you need a power source don’t take a chance and get meanwell, they really are the best for the price.

Worked well, was easy to connect to. For some applications the temperature controlled fan might be a bit loud.

I gerrymandered this to replace a custom power supply. So far, it works great. It isn't getting hot (load is way below power supply limit). I'll be buying more

Using 3 of these PSUs, one for each 4a nema 23 servo. They were working fine until one psu just stopped working. Like I said I'm only driving these PSUs at 4a, with a peak of 4.3a. I thought purchasing a 7+ amp PSU would be perfect, but I was wrong. Going to have to buy something more expensive and reliable. I can't recommend this.