ZW32-12FG series outdoor high voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker") is a rated voltage of 12kV, three-phase AC 50Hz outdoor power distribution switchgear. The circuit breaker is mainly used to break and close the load current, overload current and short-circuit current in the power line. It has overload and short-circuit protection functions, meets the control and measurement requirements, and can also realize remote control and monitoring functions. It is widely used in substations, industrial and mining enterprises' power distribution systems for control and operation, and is particularly suitable for places that require frequent operations.