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145 KV Outdoor GCB

The 145 kV Outdoor GCB is designed and developed for transmission and distribution networks. These GCBs are of Live Tank Design with motor or manual charged spring opening-spring closing operating mechanisms and are capable of interrupting all possible switching duties. The breakers are of single break interrupter design and employ dual flow puffer action for current interruption. This ensures high operational reliability and safety of power transmission and distribution system.


These breakers are capable of clearing the severe rate of rise of recovery voltage due to short line faults and high recovery voltage peak due to out of phase switching. Small currents such as capacitor bank switching currents, transformer magnetising currents, cable or line charging currents are interrupted smoothly without any re-strikes or re-ignition and over voltages are minimized.

Rated VoltageRated CurrentBreaking CapacityStandardContactDownload
145 kVUp to 3150 AUp to 40 kAIEC
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