Ceneral

ZN85-40.5 indoor HV vacuum breaker is used for switching on and off load current, over load currnt, fault current in industrial and mining establishments, power plants and transformer substations with three-phase AC 50Hz, rated voltage 40.5kV power systems.

The breaker and opeerating mechanism use up-under arrangement structure, reducing the depth of the breaker effectively.

The spring operating mechanism, desogmed for this new breaker, is installed in the breaker's frame. Its structure is more suitable for arrangement structure of the breaker, becoming a part of the breaker's overall structure. Having simple structure design, its output curve and performances are more suitable for requests of the 40.5kV vacuum breaker.

With reasonable general planning, goodly and compact outline, small size and flexible operation, the break has features of reliable electric specification, long life, easy to check and non maintenance of the mechanism.

The breaker is used for operating frequently and in some places with difficult working conditions.

Main technical parameter

Outline mounting dimension