VB5(ZN21B) vacuum circuit breaker is based on the introduction of Belgium EIB vacuum circuit breaker technology products, after several years of technical research and process exploration, put into mass production in 1993. VB5(ZN21B) and its series products have excellent advancement and reliability. Rated frequency50/60 Hz,Rated voltage 12kV.

VB5(ZN21D) indoor high-voltage AC vacuum circuit breaker is an indoor high-voltage switchgear with rated voltage of 40.5kV and three-phase AC 50/60Hz. It can be used as the control and protection of electrical equipment in industrial and mining enterprises, power plants and substations, and it is suitable for frequent operation.

The ZW32 intelligent complete set of pole-mounted circuit breaker is a new generation of integrated intelligent automatic vacuum circuit breaker. Suitable for protection and control in power distribution systems of substations and industrial and mining enterprises, and more suitable for rural power grids and frequently operated places.

ZW8/630 outdoor high voltage vacuum circuit breaker is suitable for 50Hz three-phase power system, mainly used for breaking and closing the load current, no-load current and short-circuit current of the urban 10kV power grid. It can also be used as a sub-switch for rural power grids and small power systems. It is an updated product for urban and rural power grids and rural oil-free power systems.