GE Q-line, 120 volt, single pole, arc fault circuit breaker detects arc faults in both parallel and series wiring. Features a dedicated calibration screw which is cemented to prevent shifting and creates a stable calibration for optimum performance. Features a tin-plated copper stab to create a reliable, permanent, and corrosion-resistant connection. Breaker case is constructed of heat-resistant thermoset for stability and structural integrity. 1 inch space required. UL (Underwriter's Laboratories) listed. No. THQL1115AFP2: Amperage: 15A, Number of Poles: 1-Pole, Interruption Type: CAFCI, Voltage: 120V, Frame Size: 1-Space, Breaker Size: 1 In., Mount Type: Plug-In, Wire Size: #14-8 AWG, UL Listed: Yes, Pkg Qty: 1, Package Type: Card No. THQL1120AFP2: Amperage: 20A, Number of Poles: 1-Pole, Interruption Type: CAFCI, Voltage: 120V, Frame Size: 1-Space, Breaker Size: 1 In., Mount Type: Plug-In, Wire Size: #14-8 AWG, UL Listed: Yes, Pkg Qty: 1, Package Type: Card