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Zn12-12 Indoor AC High-Voltage Vacuum Circuit Breaker
ZN 12-12 is a kind of widely applied indoor switch product developed on the basis of Siemens 3AF technology. It is used to control and protect electric equipments in 12KV industrial and mining establishments, power plant, substation and railway system. It is famous for it`s merits such as strong breeaking ability, high reliability, simple structure, electric and mechanical lifetime, simple maintenance and no pollution to environment etc. Suitable for each occasion with frequent operations.Technical Specification / ParameterRated voltage: 12KVRated current: 1250-2500ARated frequency: 50HZRated short circut breaking current: 31. 5 / 40 / 50KABreaking times of rated short-circuit breaking current: 50 / 30 / 12times1min P. F withstand voltage: 42KVLightning impulse withstand voltage: 75KVMechanical lifetime: 20000Times
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