series AC vacuum contactor is designed for long-distance making and breaking

of circuit, frequency starting and controlling of AC motors in the power systems,with AC 50Hz-60Hz and rated operating voltage of 1,140V. It also can be formed with thermal relay and all kinds of protection apparatus like electromagnetic starter, especially applied to explosion electromagnetic starter and all sorts of power control equipment. It may be applied to the departments of mining, metallurgy,petroleum, chemical industry, power, communication transportations, shipping,and architecture.