Numbers and Titles



33 77 00 Medium-Voltage Utility Switchgear and Protection Devices
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Includesswitchgear and circuit protection devices for medium- voltage utility applications. Medium voltage: 2400 V to 69 kV.
Alternate Terms/Abbreviationscircuit breakers: disconnect switches. Gas circuit breakers: SF6 circuit breakers.
See26 13 00 for medium-voltage facility switchgear. 26 16 00 for medium-voltage metering. 26 18 00 for medium-voltage circuit protection devices. 33 72 00 for utility substations. 33 73 00 for utility transformers. 33 75 00 for high-voltage utility switchgear and circuit protection devices. 33 79 23 for utility substation grounding. 34 21 19 for traction power switchgear.
33 77 13Air Medium-Voltage Circuit Breaker
33 77 16Oil Medium-Voltage Circuit Breaker
33 77 19Gas Medium-Voltage Circuit Breaker
33 77 23Vacuum Medium-Voltage Circuit Breaker
33 77 26Medium-Voltage Utility Fusible Interrupter Switchgear
33 77 30Medium-Voltage Disconnect Switch
33 77 33Medium-Voltage Utility Cutouts
33 77 36Medium-Voltage Utility Fuses
33 77 39Medium-Voltage Utility Surge Arresters
33 77 40Medium-Voltage Rod Gap
33 77 53Medium-Voltage Utility Reclosers