I ordered this CB for ups with battaries. It was Hard to find such CB for direct current circuit. I found only 63 A CB in local shop and it was insuffisient for my needs. So this CB saved me) 100 A one holds 60-70 A without problems. I advise this CB, but be careful, because it is A little bit wider than standart one channel CBs. Also have in mind that this is DC CB so polarity is important, plus is on the top, and minus is on the bottom.
Everything works fine!