... can be with the ZN63A (VSI) type of circuit breaker of this company, C3 series of fixed load ... over 125mm, composite insulation is over 60mm. all the circuit breakers have the features of long working life, high parameters, ... on.. Main technical parameters itemUnitParametersrated voltageKV12rated currentHZ50rated current of circuit breakerA630,1250,1600,2000,2500rated current of switch cabinetA630 ...