| 摘要 |
A circuit breaker with a magnetically-coupled trip indicator is provided to remove problems of a conventional trip indicator relating to oil-sealing leakage, electrical component failure, and power source failure by magnetic coupling. A circuit breaker(10) with a magnetically-coupled trip indicator includes a housing(30), an indicator member(12), and a magnetic coupling unit. The housing has a wall(31) defining an inner face and an outer face. The inner face defines an enclosure(32) shaped to contain moving contacts and oil. The indicator member has a magnetic end and a flag end. The indicator member is mounted to move within an outer cavity in the outer face of the wall. The magnetic coupling unit transmits movement of the contacts through the wall by repulsive magnetic force to cause the flag end to protrude from the outer face of the wall. |
