33 77 00 Medium-Voltage Utility Switchgear and Protection Devices
33 77 30 Medium-Voltage Disconnect Switch
33 77 13Air Medium-Voltage Circuit Breaker33 77 16Oil Medium-Voltage Circuit Breaker33 77 19Gas Medium-Voltage Circuit Breaker33 77 23Vacuum Medium-Voltage Circuit Breaker33 77 26Medium-Voltage Utility Fusible Interrupter Switchgear33 77 30Medium-Voltage Disconnect Switch33 77 33Medium-Voltage Utility Cutouts33 77 36Medium-Voltage Utility Fuses33 77 39Medium-Voltage Utility Surge Arresters33 77 40Medium-Voltage Rod Gap33 77 53Medium-Voltage Utility Reclosers