Square D,CIRCUIT BREAKER AUXILIARY/ALARM SWITCH,3 A-6 A,3 A-6 A,GJL,GJL Instantaneous-Trip and Thermal Magnetic Circuit Breakers,Monitors Circuit Breaker Contact Status and Provides a Remote Signal Indicating the Circuit Breaker Contacts are Open or Closed or used as a alarm switch to indicate when the circuit breaker is tripped. Application depends on installation location.,Square D,UL listed accessory,auxiliary contact