Single Pole Ground Fault Interrupter Circuit Breaker 15 Amp"SQUARE D HOMELINE" FAULT INTERRUPTER CIRCUIT BREAKER 15A Single pole ground fault interrupter circuit breaker 120V GFCIs are designed to prevent serious injury or death from electrical shock by detecting ground faults at very low levels GFCIs should be used in any area where water may come in contact with electrical products GFCI circuit breakers provide all the protection of standard circuit breakers but also detect current leakage by measuring the