CT21 type spring operating mechanism General description CT21 type spring operating mechanism is available for ZNF-10Q/630 indoor HV vacuum load-breaking switch, 3-63kV AC HV vacuum load-breaking switch and other vacuum load-breaking switches which have equivalent closing power with that of said switches. With reasonable configuration and good properties, it has two kinds of operating ways respectively by power or by manual. Mechanical life: 10000 operating cycles Main Technical Data: No. Item Data 1 Rated voltage of motor -220J 2 Rate opening voltage -110V,~220W 3 Output turning angle of mechanism 480 4 Output power of mechanism 60~80J 5 Weight of mechanism 9kg