Do all GFCIs work the same way?
All GFCIs work in the same manner to protect consumers against ground faults. However, there is a difference. Unlike the receptacle GFCI and portable GFCI, the circuit breaker type also provides overload protection for the electrical branch circuit. A consumer can tell if his home has circuit breaker type GFCIs by looking at the electrical panel box. Unlike the regular circuit breakers, the GFCI circuit breaker has a TEST button and a RESET button.