... exporting. Application:ZW8-12 outdoor high voltage vacuum circuit breaker is rated voltage 12KV, three-phase AC ... current, overload current, short-circuit current . The product of the overall structure is box-type three-phase, three ... insulation, reliable performance, high dielectric strength. vacuum circuit breaker Specification: Sequence number ItemUnitData6.3KA12.5KA20KA1Rated voltage KV122Rated ...