33.77.00 Medium-Voltage Utility Switchgear and Protection Devices
33.77.36 Medium-Voltage Utility Fuses
33.77.13 Air Medium-Voltage Circuit Breaker 33.77.16 Oil Medium-Voltage Circuit Breaker 33.77.19 Gas Medium-Voltage Circuit Breaker 33.77.23 Vacuum Medium-Voltage Circuit Breaker 33.77.26 Medium-Voltage Utility Fusible Interrupter Switchgear 33.77.30 Medium-Voltage Disconnect Switch 33.77.33 Medium-Voltage Utility Cutouts 33.77.36 Medium-Voltage Utility Fuses 33.77.39 Medium-Voltage Utility Surge Arresters 33.77.40 Medium-Voltage Rod Gap 33.77.53 Medium-Voltage Utility Reclosers