ZW7-40.5 Pillar Type Vacuum Circuit Breaker

ZW7-40.5 outdoor vacuum circuit breaker is used in three-phase power systems with AC 50Hz and voltage 40.5kV to break and close load current, overload current and short-circuit current. Using vacuum arc extinguishing, it has strong breaking capacity, long electrical life, and mechanical life of 10,000 times; simple maintenance-free structure, long maintenance cycle; good insulation performance, strong anti-pollution ability: can be equipped with spring or electromagnetic operating mechanism, reliable mechanical performance , can be operated frequently; there is no fire or explosion hazard; the built-in current transformer has an accuracy of 0.2, which can realize three-phase interactive protection; the built-in condensation controller can keep the circuit breaker operating reliably under a certain temperature and humidity.