ZW32-40.5/630A Small Pillar Watchdog 35KV Outdoor Vacuum Circuit Breaker is a three-phase exchange 50hz, rated voltage 40.5kv outdoor high-voltage switchgear equipment. It is used to break and close the load current, overload current and short-circuit current of urban or rural distribution station system. The circuit breaker is a new miniaturization plan, fully enclosed layout, and peculiar arc extinguishing chamber packaging technology