I-CMTB1-63 DC MCB isaphuli sesekethe esincinci luhlobo lwesixhobo sokhuselo esenzelwe ukubonelela ngokhuseleko oluthembekileyo nolusebenzayo kwiimpazamo zombane kwiisekethe zeDC.Inokukhusela izixhobo zombane kunye nezinye izixhobo zomthwalo kwi-overload kunye neengxaki ze-short-circuit, kunye nokukhusela ukhuseleko lwesekethe.I-DC encinci ye-circuit breaker eyaziwa ngokuba yi-DC MCB,