Square D QOB120CAFI 1 Pole AFCI Circuit Breaker

The Square D QOB120CAFI is a bolt-on, single-pole AFCI circuit breaker rated at 20 amperes for 120-volt circuits, designed to install in Square D QOB bolt-on panels and load centers that accept 1-pole AFCI devices, delivering a compact yet robust safety upgrade for existing electrical distribution. As a CAFI—Combination Arc Fault Circuit Interrupter—breaker, it provides both overcurrent protection and arc-fault detection to mitigate fire hazards from arcing faults on residential branch circuits, and it is specified with a 10 kA interrupting capacity to handle typical loads. This unit is part of the QOB family, a bolt-on option distinct from plug-on devices, and its 120 V rating clarifies suitability for standard home circuits such as lighting, outlets, and other general purpose receptacle runs that require AFCI protection. Used where code requires AFCI protection in a 1-pole arrangement, the QOB120CAFI complements Square D’s CAFI lineup by providing reliable arc fault protection in a trusted Square D/Schneider Electric ecosystem.