Why does the ZW32 vacuum circuit breaker choose the spring operating mechanism?

Why do the new ZW32 vacuum circuit breakers choose the spring operating mechanism to replace the electromagnetic operating mechanism?

A: the selection of ZW32 vacuum circuit breaker electromagnetic actuator, the switching power is generated by a DC electromagnet, and the operation is too large, such as the current CD10 and CD17 type electromagnetic actuator used in 220V values were 147A and 128A. Because the back EMF in the electromagnet coil is related to the movement speed of the core, the improvement of the closing speed of the breaker and the service life of the electromechanical circuit are further improved. Therefore, the new type of vacuum circuit breaker in foreign countries is no longer the use of electromagnetic actuator. The spring operating mechanism, features are: using the spring energy storage, the breaker operation only by a small electromagnet power control of DC power requirements is not high, speed and long service life, so it has widely replaced the electromagnetic operating mechanism.

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