ZN85-40.5 Series Indoor High-Voltage Vacuum Circuit Breaker

The ZN85-40.5 series indoor high-voltage vacuum circuit breaker is suitable for three-phase AC 50Hz, rated voltage 40.5kV power system. It can be used for switching load current, overload current and fault current in industrial and mining enterprises, power plants and substations. The circuit breaker and the operating mechanism are arranged up and down, which effectively reduces the depth of the circuit breaker.

ZN85-40.5 Series Indoor High-Voltage Vacuum Circuit Breaker

The three-phase arc extinguishing chamber and the connected charged body are separated by three independent epoxy resin insulation cylinders to form a composite insulation structure. The circuit breaker meets the requirements of air distance like this and creepage distance under normal operating conditions, and effectively reduces the volume of the device.

The vacuum interrupter of the main conductive circuit and the static and dynamic conductive connection are installed in the insulating cylinder, so that the distance between the phases is only 300mm. The electrical connection of the main circuit all adopts fixed connection, which has high reliability. The insulating cylinder is installed above the circuit breaker frame.

The design of the mechanism is simple, and there are many choices. The output curve and its performance are more suitable for the characteristics and requirements of 40.5kV vacuum interruption.

The overall layout of the circuit breaker is reasonable, beautiful and simple. Small size, flexible operation, reliable electrical performance, long service life, convenient maintenance, and maintenance-free mechanism. The circuit breaker is suitable for frequent operation and many occasions and places with harsh operating conditions.

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