Type ZN72-40.5/D vaccum circuitbreaker equipped with permanent magnetic operating driver is introduced in this paper, which has good performance, high reliability and convenient application.
The vacuum circuitbreaker with permanent magnetic actuator developed by ABB Company in 1997 adopts a double-stable double-coil structure in its actuator.
A BB公司于1997年研制的永磁机构真空断路器，其永磁机构采用双稳态双线圈结构。
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Reduction in parts Inventories and Costs: the simplified design of the vacuum circuitbreaker or contactor has up to 50% less parts than the equivalent air magnetic equipment.