Eaton CHFCAF120N Combination Arc Fault Circuit Breaker

The Eaton CHFCAF120N is a 1-pole, 20-amp, 120-volt combination arc-fault circuit breaker from Cutler-Hammer. As an AFCI device, it detects arcing faults on the protected circuit and interrupts power to reduce fire risk; the “combination” designation means it also provides conventional overcurrent protection on a single-pole circuit. The CHFCAF120N is the exact part number for this model within Eaton’s Cutler-Hammer family, signaling 120V operation with a 20A rating in a compact 1-pole form factor. By pairing arc-fault sensing with standard overcurrent protection, this breaker helps address safety needs for a 120V circuit that requires AFCI protection while preserving the familiar electrical characteristics of a standard 1-pole breaker. The Eaton Cutler-Hammer branding on this model reflects a long-standing lineage of reliable electrical protection components, and the 1P configuration denotes protection of a single hot conductor in the circuit.