20 Amp Double Pole Ground Fault Breaker with Self-TestThe GE 20 Amp Double Pole Ground Fault Circuit Breaker with Self Test has a tin plated copper stab to create a reliable, permanent and corrosion resistant connection. The Self Test functionality is a UL requirement on all GFCI devices commencing in June 2015. This variant of the GFCI ensures its ground circuitry is functioning properly by automatically running diagnostic testing on a periodic basis. Should a problem be detected, the circuit breaker