Product Type: KYN28A(GZS1)-12(Z) Main Technical Parameters: Rated voltage: 12kV Rated current: 630~3150A Max break current: 40kA Vacuum handcart type (medial) circuit-breaker (VS1,VD4,VK,3AH5) Main Service Range: 12kV and below distribution system of power plant, industrial and mining enterprises, user distribution substation, etc.