Help with building a dc breaker box

[Kenny_]

Hmm...looks like the product you're searching for is not available.

This one I think: https://www.homedepot.com/p/Siemens...ible-Outdoor-Safety-Switch-LNF222RA/310731843

 

[OzSolar]

So any of the square D QO breakers and breaker box are dc rated? I read that but wasn’t sure if that was still the case. The article I found was from years ago. I would much rather use a Square d box and brakers due to that being what my main load center is so would look uniform together inside the control room. Thank you

They are, see the chart in post #14 from @timselectric
*70 amp and under QO breakers are rated for use in systems less than 48v if you are breaking the positive.
*If you break both the positive and negative they rated for up to 125v which may be wise to do even in 12v application since it doubles Ampere Interrupting Rating. Here's a short read that may help. It about AC systems but the concept is the same.

It's all rather confusing but you'll get it!