high-voltage vacuum contactor is suitable for the distribution systems of metallurgy, mining, petro-chemistry and architecture, to control the equipment using electricity (3.6kV, 7.2kV or 12kV), transformers and capacitive loadings. Because of its small volume, light weight, packaged design of upper and lower arrangement and prevalence in the world, it is convenient to use, maintain and form the complete equipment of f-c loop. It is comprised of electricity operation and mechanical operation.