Square D QO Dual Function Breaker Dual function circuit breaker. Features space and labor savings. Engineered to meet NEC National Electrical Code requirements. Combines two critical technologies combination arc fault protection and ground fault protection in one easy to install device. Integrated with time saver diagnostics, a unique feature that provides additional circuit information and minimizes troubleshooting at the touch of a button. Compatible with QO load centers only. 120 volt, 10,000 AIR. ANSI American Nation Standards Institute certified and UL Underwriter's Laboratories listed. Limited lifetime warranty. Amperage 20A, Number of Poles 1-Pole, Interruption Type CAFCI/GFCI, Voltage 120V, Frame Size 1-Space, Breaker Size 3/4 In., Mount Type Plug-In, Wire Size #14-10 AWG Al/#14-8 Cu, UL Listed Yes, Pkg Qty 1, Package Type Clamshell WARNING Cancer and Reproductive Harm- www.P65Warnings.ca.gov