Bell alarm for circuit breaker

Claim 1

A multipole circuit breaker including a hollow base having an open front; a removable cover secured to said base to cover said open front; said base having integrally formed barrier means dividing the interior of said base into a plurality of longitudinally extending compartments; within each of said compartments, a stationary contact and a cooperating movable contact engageable with said stationary contact; a transverse tie bar having said movable contacts of all poles operatively connected thereto for simultaneous operation of all said movable contacts; a spring powered contact operating mechanism operatively connected to said tie bar for simultaneously operating the movable contacts of all the circuit breaker poles into and out of engagement with their cooperating stationary contacts; said operating mechanism disposed within a first of said compartments and including a frame secured to said base and a releasable cradle mounted on said frame; latch means which when latched engages said cradle to hold the latter in a reset position permitting said operating mechanism to move said movable contacts into engagement with their cooperating respective stationary contacts, fault current responsive trip means operable to trip said latch means to release said cradle thereby controlling said operating mechanism to prevent said cooperating contacts from engaging; a switch unit in a second of said compartments next to said first compartment; said switch unit including a housing, a contact operator extending therefrom and contact means within said housing operable by said operator; an actuator mounted on said frame and guided for limited forward and rearward movement; biasing means urging said actuator forward; said cradle in moving toward its said reset position engaging said actuator and moving the latter rearward to operate said contact operator to move said contact means of said switch unit from its normal position.