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The QO120DF is a premium Square D 1-Pole 20A 120V Push In GFCI/AFCI breaker designed for reliable circuit protection. This device is perfect for hot tub applications and helps ensure safety against ground faults and arc faults. Enjoy peace of mind with enhanced protection for your electrical systems.
The QO120DF provides dual-function protection, combining both AFCI (Arc-Fault Circuit Interrupter) and GFCI (Ground-Fault Circuit Interrupter) in a single 1-pole breaker. A standard QO120 offers neither — it is a basic thermal-magnetic breaker. The QO120DF's 5mA GFCI sensitivity makes it suitable for locations requiring personnel protection (e.g., hot tubs, bathrooms, kitchens), while the AFCI component satisfies the arc-fault protection requirements of the Canadian Electrical Code for bedroom and living area circuits.
Yes. Hot tub circuits in Canada (per CEC Section 68) require GFCI protection at 5mA sensitivity, which the QO120DF meets. Many inspectors also accept the combined AFCI/GFCI dual-function breaker as it exceeds the minimum requirement. We recommend confirming with your local authority having jurisdiction (AHJ) before installation, as specific requirements can vary by province and municipality.
A dual-function breaker that won't reset usually indicates a persistent ground fault or arc-fault condition on the circuit. First, disconnect all loads on the circuit and attempt to reset. If it resets with loads disconnected, reconnect devices one at a time to identify the faulty load. If it trips immediately with no loads connected, there may be a wiring fault (damaged insulation, moisture ingress, or a neutral-to-ground fault in the wiring). If the breaker itself appears faulty, contact us — we carry QO series replacement stock including hard-to-find dual-function variants.
