Square D QO215CAFI AFCI Miniature Circuit Breaker

The QO215CAFI is designed exclusively for Square D QO load centers and NQ panelboards. It features a QO plug-on mounting clip and cannot be installed in Homeline (HOM) panels or load centers from other manufacturers.

Yes. The QO215CAFI features a coiled white pigtail wire that must be connected directly to the panel neutral bus bar. This connection powers the internal microprocessor that detects dangerous arc faults.

This breaker is a Combination Arc Fault Circuit Interrupter (CAFI). It provides advanced protection by detecting both parallel arc faults, which occur between line and neutral or ground, and series arc faults, which occur due to loose connections within a single wire.

Yes. Two-pole CAFI breakers like the QO215CAFI are specifically designed to provide arc fault protection for 240V circuits or multi-wire branch circuits (MWBC) where two 120V circuits share a single neutral wire.

Yes. If you are installing into a Square D QO Plug-on Neutral load center, you can use catalog number QO215PCAFI to eliminate the pigtail wire. However, the pigtail version (QO215CAFI) is backward compatible and will work in both standard and Plug-on Neutral QO panels.

After installation, energize the circuit and press the white test button on the face of the breaker. The breaker should trip immediately, moving the handle to the center position. Square D recommends performing this test monthly to verify the electronics are working correctly.

When the breaker trips, the handle moves to a center position and a red Visi-Trip indicator will appear in the window. To reset it, push the handle firmly to the OFF position until it clicks, then push it back to the ON position.

Yes. While commonly used in residential QO load centers, the QO215CAFI is fully compatible with Square D NQ panelboards for commercial applications that require 15A arc fault protection.