Schneider Electric Square D QOB120AFI Circuit Breaker

Schneider Electric Square D QOB120AFI is a 1-pole, 20-amp arc-fault circuit breaker from the QO family designed for bolt-on installation in compatible Square D QO panels and mounting bases. It is rated for 120 V and offers a 10 kA interrupting capacity (10 kAIC) with arc-fault protection (AFI) to detect and interrupt arcing conditions on the protected branch circuit. The QOB120AFI uses a bolt-on (QOB) mounting configuration and includes a pigtail lead for connection, aligning with TAA-compliant components. As a single-pole device, it protects one hot leg of a 120 V circuit and is intended for use in panelboards, load centers, OEM mounting bases, and other Square D mounting configurations that accept QOB breakers. The model number QOB120AFI denotes a 1P, 20A AFI breaker suitable for residential or light commercial applications seeking enhanced arc-fault protection on a 120 V branch circuit. This specific breaker provides the essential overcurrent protection for individual circuits while integrating AFI functionality in a compact 20 A package compatible with Square D QO-compatible equipment.