DC Miniature Circuit Breaker MCB Mini Circuit Breaker 1,1A,2A,3A,5A,6A,10A ... ,15A,20A,25A,32A,40A,63A 2,Max voltage:500V+10% KMB2Z-63 High ... Breaking DC Mini Circuit Breaker(MCB)ker(hereafter ref The KMB2Z-63 series DC Mini Circuit Breakers to as circuit breaker)(MCB), ... CONTACT US. 63A KMB2Z-63 DC Miniature Circuit Breaker MCB Mini Circuit Breaker