ZW8-12 series vacuum circuit breakers are outdoor high-voltage switchgear with a rated voltage of 12kV and three-phase AC 50Hz. They are mainly used to switch on and off load current, overload current, and short-circuit current in rural power grids, urban power grids, and small power systems. The overall structure of this product is a three-phase common box type. The three-phase vacuum sub-arc chamber is placed in a metal box. SMC insulation materials are used for phase insulation and ground insulation. It has reliable performance and high insulation strength.
ZW8-12G is a combination of ZW8-12 circuit breaker and dis-connector, called a combined circuit breaker, which can be used as a section switch.
The operating mechanism of this series of products is the CT23 spring energy storage operating mechanism, which is divided into two types: electric and manual.