Vacuum arc extinguishing, strong breaking ability, long electrical life, mechanical life of 10000 times;

· Simple structure, maintenance-free and long maintenance cycle;

· Good insulation, strong anti-pollution ability;

· Spring or electromagnetic operating mechanism can be equipped, with reliable mechanical performance and frequent operation; No hidden danger of fire or explosion;

· Internal current transformer, with calculation accuracy up to 0.2, can achieve three-phase interactive protection;

· With condensation controller, the circuit breaker can operate reliably under certain temperature and humidity.