ZW32-40.5/1250A type outdoor high voltage vacuum circuit breaker is the three-phase AC 50Hz, suitable for the rated voltage of 40.5kV outdoor high-voltage switchgear, which comply with the national standard GB1984 "high voltage AC circuit breakers" and professional standards JB3855 "3.6 ~ 40.5kV outdoor AC high voltage vacuum circuit breakers" and related IEC standards. It can be used for the control and protection of electrical equipment for industrial and mining enterprises, power plants and substations, and suitable for frequent operation. The circuit breaker has the ability to break off and fast break off multiple times.