Short Description:

ZN85-40.5/T2000-31.5 type indoor high voltage Vacuum circuit breaker (below said as VCB), is suitable for power system with 3-phase AC 50HZ, rated voltage 40.5KV, it can be used as load current, overload current and fault current for mining enterprises, power plant and substation.

The breaker and the operation structure is upper and lower layout, reduced the depth effectively.

3- phase interrupter and associated live parts are isolated by three independent isolated epoxy insulating tube, act as the composite insulation structure. This VCB can meet the requirement of air distance and creepage distance, and reduce the size of the VCB effectively. Leading electric circuit interrupter, static and dynamic conductive connection install in the insulating tube which let the distance between the phase is only 300mm. AlI the leading electric circuit is fixed type, which makes the connection very stably. Insulating tube installl on the upside of the frame.

The spring actuator specially designed for this type of new VCB, install inside of the frame, which is more suitable for the upper and lower structure, as an inseparable part of the VCB. The design of the VCB is simple, output curve is more suitable for the features and requirements f the 40.5KV VCB.

Overall layout is reasonable, beautiful, simple, with features as smaller volume, flexible operation, reliable characteristics, long endurance life, easier inspection, free of maintenance, etc，

It is suitable for frequently operation, suitable for the places in very poor condition.