UL buck converters?

[cdsolar]

I will be in need of a 48v to 12v buck converter when I build my 48v system. Here is an example of one (Not recommending it, just pointing one out):

https://www.amazon.com/BIRITALO-Waterproof-Converter-Regulator-Golf-Cart/dp/B0BD8WDX7V

Does anyone know of one that is UL or ETL listed? What standard other than a power source equipment would it be if UL listed?

Thanks

 

[Steve_S]

Potter converters like that are A) quite terrible and fail in ON position allowing full voltage to pass through (bad) and B) because of what they are they can never ever be certified. I gather you never seen the guts of one...

There are indeed Listed Step UP/Down transformers but they aren't $20 USD either.
I would suggest you start looking at Samlex DC to DC Converters which are all UL/CSA/ETL Certified. These are Top Tier with all the appropriate safeties etc...

DC-DC Converter | Isolated, Step Up, Step Down | Samlex America

Samlex high-efficiency DC-DC converters regulate the DC voltage that is input to the converter. Available in isolated, step up or step down options.

samlexamerica.com

NOTE: Rather a Heads Up, You MUST get a converter that can take up to 60V so that when doing Bulk/Absorb, voltages which could be as high as 58.4 V if charging to 3.650V per cell in a 16S pack. Also if you require say 20A @ 12V, it is far better to buy a converter capable of a bit more like 25 or 30 Amps and that is to cover any potential surges, they can pop up unexpectedly.

 

[HRTKD]

For what it's worth, the Victron 48-12 converters don't have UL listings, but they do have EN listings.

 

[cdsolar]

A little more googling revealed this UL listed device:

TMDC 60 | Traco Power

www.tracopower.com

The TMDC 60-4812 is a 60 watt, 48 to 12 volt model (see datasheet) and will give me up to 5amps, which would be good for a very small load (my intent). They have other options too.

Not sure what the on/off function entails or if I am missing something.

Just a thought.

 

[timselectric]

Another option would be a UL listed solar charge controller.