Circuit breaker condition indicator apparatus

Claim 1

Condition indicator apparatus for a circuit breaker having a spring-powered operating mechanism for motivating breaker movable contacts between tripped open and closed positions, and a spring-powered charging mechanism operatively coupled with the operating mechanism, the charging mechanism capable of being charged, storing such charge, and subsequently discharging to charge the operating mechanism, and hook means selectively operable to hold the breaker movable contacts in an intermediate hooked open position against the force of the charged operating mechanism acting to propel the movable contacts to their closed position, said apparatus comprising, in combination: A. a first indicator arm mounted for movement between an ON indicating position, assumed in response to the movable contacts being in their closed position, and an OFF indicating position, assumed in response to the movable contacts being in either their tripped open or hooked open positions, B. a first display panel carried by said first arm and bearing indicia separately registerable in a window in the circuit breaker cover in accordance with the position of said first arm to locally indicate whether the breaker contacts are open or closed;