Hard Wired GFCI, 30 A Amps, Voltage 120V AC, Single Phase, Reset Type Manual, Mounting Style Panel/Surface, Color Black, Inlet 3/4 in NPT, Enclosure Rating 4X, Audible Alert No, Lead Length 2 ft, Material Valox, Standards UL Listed, Min. Operating Temp. -30 Degrees F, Max. Operating Temp. 150 Degrees F Hardwired ground fault circuit interrupters (GFCIs) prevent electric shock from ground faults. During a ground fault, electricity unintentionally flows toward the ground and may shock people who are in the current's path. GFCIs are wired into a circuit and have sensing modules that trip circuit breakers during a ground fault incident to cut off the current. They're used with electrical receptacles in moist, humid, and wet environments.