outdoor high-voltage vacuum circuit breaker(ZW8-12

ZW8-12/630-20 series outdoor high-voltage vacuum circuit breaker Summary: Match with electric spring operation mechanism and apply the vacuum arcing chamber , air insulation so that the product arcing ability is strong, short open circuit times is high, no fire and explosion danger, operate conveniently, it is a kind of good performance, strong usefulness of products. The product structure adopts three-phase together box type, casing into the finals, the casing is dry air, electric spring operation mechanism is installed side of box, it can be reliable used in a harsh environment conditions. The product vacuum arcing chamber adopts porcelain case, cup shape and longitudinal magnetic field contactor structure, copper reguar contactor material, has excellent open circuit and close short circuit current ability. This product is small volume, light weight, good appearance. Vacuum arcing chamber and insulation support casing compact design, because the outlet line conduct pole note silicon rubber, it can adapt to bad weather and pollution environment. Usage: ZW8-12/630-20 series outdoor high-voltage vacuum circuit breaker is ac 50Hz of three-phase power system. It is used for open and close load current, no-load current and short circuit of 10kV power grid in city center. It also can be available for rural power grid and small electrical system of separate switch, it’s a city upgrading products of city network, rural network without oil. Main technical parameters: Rated voltageRated currentPower frequency withstand voltageDraught of thunder withstand voltage(peak value)Rated short-circuit breaking current(RMS)Rated short-circuit closing current(peak value)Rated operations sequenceRated short-circuit current breaking timeMechanical life10. Rated control voltage(close, break brake coil) 11. Move, static contact allows wear thickness 12. Isolation clearance disconnect distance