· Vacuum arc extinguishing, strong breaking ability, long electrical life, mechanical life of 10,000 times;

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

· Good insulation, strong anti-pollution ability;

· It can be equipped for spring or electromagnetic operating mechanism, with reliable mechanical performance and frequent operation; No fire and explosion hazards;

· 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.