ZN56-12 High voltage vacuum circuit breakerDetailed product description：

ZN56-12 (V2000) indoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz indoor device with a rated voltage of 12KV. It is used for control and protection in industrial and mining enterprises, power plants, and substations in 10KV power systems, especially in places with frequent operation.

Introduction to the Structure of ZN56-12 High Voltage Vacuum Circuit Breaker
This circuit breaker is equipped with a ceramic vacuum arc extinguishing chamber, using copper chromium contact material and cup-shaped longitudinal magnetic field contact structure. The electrical wear rate of its contacts is low, the electrical life is long, the voltage resistance level of the contacts is high, the dielectric insulation strength is stable, the arc recovery is rapid, the current cutoff level is low, and the breaking ability is strong.

The overall structure of the circuit breaker adopts the form of operating mechanism and arc extinguishing chamber arranged in front and behind, and the main electrical circuit part is a three-phase floor standing structure. The operating mechanism is a flat spring energy storage mechanism with manual and electric energy storage functions. The operating mechanism is placed in the chassis in front of the arc extinguishing chamber, which is divided into five assembly spaces by four middle partitions. The energy storage part, transmission part, trip part, and buffer part of the operating mechanism are respectively installed in between.