Load breaking switch,by using the principle of vacuum interrupter, with strong arcing ability,reliable performance, long service life, small volume, no explosion danger, no pollution etc advantage. The load break switches can be used in transmission and distribution system of electric power, metallurgy, mine, chemical industry and other departments as control equipment, especially suitable for frequent operation place.Load breaker switch is composed of isolating switch, vacuum interrupter and operating mechanism and other parts.