ZW8-12 High Voltage Vacuum Circuit Breaker (hereinafter referred to as "ZW8-12 High Voltage Vacuum Circuit Breaker") is a three-phase AC 50Hz outdoor high-voltage switchgear; It is mainly used for 10kV systems in rural and urban power grids, as a sub-load and combined load current, overload current and short-circuit current; It can also be used in other similar places. ZW8-12 series outdoor AC high voltage vacuum ZW8-12 High Voltage Vacuum Circuit Breaker meets the ** standard GB1984 "AC High Voltage ZW8-12 High Voltage Vacuum Circuit Breaker" and IEC 60056 "High Voltage AC ZW8-12 High Voltage Vacuum Circuit Breaker" and other standards.