Any DC rated switch or breaker rated 100v or higher, and 10A would do...
In Australia they are readily available for din mount rails for our 'fuseboxes' with a 600v or 1000v rating from any electrical wholesaler (as they are required by law for any solar system, and as 1/3 of Aussie houses have solar panels fitted, the stuff needed is literally sold everywhere...)
My old gridtie where I used to live (the two external cutoffs, one for the east facing array, one for the west facing array)
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My current offgrid systems DC breakers (I use them as switches if I have to disconnect for any reason)
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Only two of the five are currently in use (hooked up to the north facing and west facing temporary arrays), the rest will be used when I put all the panels up, total cost for the entire box and breakers was under $100 Au