Square D QO 15 Amp Single-Pole Plug-On Neutral Combination Arc Fault Circuit Breaker 120v The Square D by Schneider Electric QO 15 Amp Single-Pole Plug-on Neutral Combination Arc-Fault Circuit Interrupting (CAFCI) Circuit Breaker is for use to help protect your wires from arcing faults and is intended for overload and short-circuits protection of your electrical system. Designed for reliability, the QO Plug-on Neutral CAFI Circuit Breaker connects directly to the neutral bar, providing a time and labor-saving installation. QO Plug-on Neutral provides several advantages and among them is fewer connections which lead to faster installation and an innovative neutral jaw eliminates pigtails which in turn frees gutter space. Now standard in all Square D brand CAFCI circuit breakers, Time-Saver Diagnostics provide advanced trip indication technology, helping identify the type of fault that has occurred faster. Time-Saver Diagnostics helps take away the guess work and provides diagnostic assistance by identifying the type of fault that last occurred. It saves money by reducing troubleshooting time, simple to use, accurate and reliable. Square D QO circuit breakers have features no other manufacturer can offer. These types of quality, industry exclusive products keep the Square D brand ahead of the competition and are builders' and electrical contractors' first choice in electrical protection. Square D QO 15 Amp single-pole plug-on-neutral combination AFCI circuit breaker Innovative neutral connection design leads to fewer connections and faster installation, no pigtails to wire which frees up gutter space Compatible with square D QO plug-on neutral load centers with 1 space only 120-Volt AC 10,000 air ANSI certified and UL Listed