1,Vacuum Circuit Breaker is indoor high-voltage rated voltage, 2,12kV and three-phase AC 50Hz 3,Rated voltage:12kv Company profile: China ... and exporting. Technical parameter: serial number ItemUintData20KV25KV31.5KV40KV1Rated voltage(KV)KV122Rated current(A)A630,1000 1250 1250, ... mm325Oil buffer buffers the journey mm10Display: ZN28 Series indoor High-voltage Vacuum Breaker,vacuum circuit breaker