... by ourself well tested,best price NS mccb molded case CURRENT breaker 400A 4PCE,KEMA,TSE,BVQI, CCC certificate professional manufacture for ... are suitable for short circuit and overload protection for circuit of AC 690V,50/60HZ,rated current from 12.5 to 1600A ... make and break non-frequent,breaking off working and protecting overload ,short circuit and under voltage.It con-forms to IEC60947 ...