I was incorrect that a breaker was available with a 3/0 post. up to 100a breakers only have a 2/0 max post. any suggestions on fixing this issue. its going into a simens solar ready panel that came with a 70A solar breaker and will accept up to 100A breaker. I do not need more than then 70A but will likely have to go to at least the 80A to get closer to size. would a crimp on 3/0 to 2/0 terminal pin be an appropriate solution? Thanks went to finish the wiring and now this is the only thing holding up the system. It was my error misreading the breaker specs originally and I thought they went up to 4/0 and it was 4awg.