QO120PCAFI

The Square D QO120PCAFI is a ‑pole,  amp combination arc‑fault and ground‑fault circuit interrupter (CAFI/GFCI) breaker from Schneider Electric’s QO family of residential and light‑commercial circuit protection devices. This advanced breaker integrates both arc‑fault (AFCI) and ground‑fault (GFCI) protection in a single device, meeting modern electrical code requirements for areas of the home where both arc‑fault and ground‑fault protection are mandated (e.g., bedrooms, kitchens, laundry rooms). The QO120PCAFI installs into QO load centers and QO/QA panelboards with a plug‑in base, providing straightforward installation and upgrade for enhanced safety without the need for separate protection devices.

Electrically, the QO120PCAFI combines thermal‑magnetic overcurrent protection with electronic sensing circuits that detect signature patterns of dangerous arc faults and ground leakage currents. The integrated arc‑fault protection detects arcing conditions caused by damaged conductors, loose connections, or deteriorated wiring, while the ground‑fault circuitry trips when unintended leakage to ground exceeds the device’s sensitivity threshold (typically 30 mA for personnel protection). This dual‑function design helps reduce the risk of electrical fires and electric shock hazards, offering a higher level of safety compared to standard thermal‑magnetic breakers. The unit is UL 489 listed as a CAFCI/GFCI combination breaker with the appropriate trip ratings for residential circuits at 120 VAC. Mechanically, the breaker features the familiar QO molded case design with a clear toggle actuator and trip indication window for quick visual status checks. It is compatible with standard QO bus systems and accepts copper or aluminum conductors within the specified wire range (generally #14–#10 AWG for a 15 A device). Because it combines multiple protection functions in one breaker, the QO120PCAFI simplifies panel wiring and reduces the need for separate safety devices while ensuring NEC‑compliant protection for living spaces.

Purchase the QO120PCAFI at Electrical.com, your reliable partner for industrial and commercial electrical products including circuit breakers panel boards, load centers and accessories. Our selection includes manufacturers like Square D and Schneider Electric, backed by a dedicated sales team ready to assist with technical questions, product selection, and support.