Dc circuit breaker
200 amp DC breakerThey come in different values,
And also function as a switch
I have a 40amp on my solar
Push the little red button to open the breaker and turn off the circuit
What size AC-spec breakers would I want for 100 amp DC loads? Is 15 or 20ish right?
No
Amps is amps, 100 amps still needs a 100 amp breaker, even if you are trying to use an 120vac breaker
Could you use a small breaker panel
Possibly as long as you use the correct breaker
But it will be larger and cost more than using a DC fuse panel like the one above