ZW32 outdoor column vacuum circuit breaker (below) is an outdoor high voltage power distribution equipment with rated voltage of 12KV and three-phase AC 50Hz. It is mainly used for breaking and closing the load current, overload current and short-circuit current in the power system. It is suitable for protection and control in substations and distribution systems of industrial and mining enterprises. It is more suitable for places where urban and rural power grids are built and frequently operated.

ZW20-12 outdoor AC high voltage demarcation vacuum circuit breaker is a user demarcation switch. It is mainly composed of three parts: ZW20-12 vacuum circuit breaker body, fault detection controller and external voltage transformer. The three are electrically connected through aviation sockets and outdoor sealed control cables, with fault detection functions, protection control functions and communication functions for reliable judgment, detection of in-bound and out-of-boundary milliamp zero sequence currents and inter-phase short-circuit fault currents, and automatic removal of single-phase The main switch of ground fault and interphase short circuit fault is vacuum arc extinguishing and adopts SF6 gas insulation.