I agree that a breaker marked with the wire size (#1AWG or larger) by association, is listed for 75 degree. The problem is the orginal post stated no markings. I am just saying that, without any markings at all, the terminals are based on 110-14(c)1+2. which is based on breaker size or wire size, but the terminals are unmarked, so we go with circuit(breaker) size as the manufacter sets. I am not sure why they are fusing a 110 MCA at 100 amps(max breaker), but they are the manufacuter, and they must have had to send it to UL or something to market the product. I don't doubt that they aer 75 degree terminals, but strictly speaking without evidence of what the terminal is suited for, 110-14 comes into play.