33 70 00 Electrical Utilities
33 75 00 High-Voltage Switchgear and Protection Devices
33 75 13 Air High-Voltage Circuit Breaker 33 75 16 Oil High-Voltage Circuit Breaker 33 75 19 Gas High-Voltage Circuit Breaker 33 75 23 Vacuum High-Voltage Circuit Breaker 33 75 30 High-Voltage Disconnect Switch 33 75 36 High-Voltage Utility Fuses 33 75 39 High-Voltage Surge Arresters 33 75 40 High-Voltage Rod Gap