Product description

ZN85-40.5 indoor high voltage vacuum circuit breaker is suitable for three-phase AC 50Hz, 40.5kV system, which can be used for industrial and mining enterprises, power plants and substations as load current and overload current fault current, and is suitable for frequent operation.

Model meaning

The main technical parameters

Shape and installation size (mm)

The circuit breaker adopts an upper and lower arrangement to effectively reduce the depth of the circuit breaker. The composite insulation structure, the three-phase arc extinguishing chamber and the associated electrified body are separated by three independent epoxy insulating covers. After the composite insulating structure is adopted, the circuit breaker satisfies the air distance and the creepage distance under normal operating conditions. And effectively reduce the size of the circuit breaker, the main conductive circuit vacuum interrupter and the dynamic and static conductive connection are installed in the insulation cylinder, so that the phase is only 300mm. The main circuit electrical connections are all highly secure with fixed connections.