Mechanism for Vacuum Circuit Breaker We are one of the mainly manufacturing 10kV series spring operating mechanism, electromagnetic operating mechanism, operating mechanism for load-breaking switch and outdoor pole vacuum circuit breaker; operating mechanisms integrated for ZN28, VS1, ZN12 type vacuum circuit breakers; and 10kV vacuum switch device as well as their components are also our major product. Major Products list CT17 type spring operating mechanism series CT19 type spring operating mechanism series CT21 type spring operating mechanism series CD17 type electromagnetic operating mechanism series Operating mechanism for ZN-12 type indoor HV VCB Operating mechanism for VS1 type VCB