Square D Qwik-Gard QO120GFI GFCI Breaker, 120V, 20A, 1 Pole

Shield your 120V circuits with trusted Qwik-Gard protection

The Square D Qwik-Gard QO120GFI is a 1-pole ground-fault circuit breaker designed for 120 VAC circuits up to 20 A. Built on the dependable QO frame, it provides quick, reliable ground-fault protection while fitting neatly into standard Square D installations. With a 10 kA interrupt rating, this device is engineered for robust performance in typical residential and light commercial wiring environments.

Key specifications you can rely on include a 60 Hz rating aligned with common electrical systems, a thermal-magnetic trip mechanism for balanced, responsive protection, and a plug-on design that simplifies installation. The device supports a wide wire range (12-8 AWG and 14-8 AWG) and is suitable for use in environments up to 40°C ambient. Its compact dimensions (0.75 in W x 2.91 in D x 4.12 in H) help keep panels organized without sacrificing safety.

Why choose the Square D QO120GFI in your panel lineup

• 120 VAC, 20 A, 1-pole configuration for single-circuit protection
• 10,000 AIR interruption rating for reliable fault response
• Plug-on mounting for faster, cleaner panel installation
• Thermal-magnetic trip ensures dependable operation under varying loads
• Compatible with Square D QO breaker boxes, CSED enclosures, and NQOD boards with 1 space

Installation and usage notes

• Frame compatibility: Squares D QO panel systems and related enclosures
• Wiring: supports 12-8 AWG and 14-8 AWG conductors
• Ambient rating: suitable for environments up to 40°C
• Mounting: plug-on design for quick upgrades or replacements

Real-world scenarios

Ideal for kitchens, bathrooms, laundry rooms, and utility closets where reliable ground-fault protection helps safeguard people and devices against unintended contact with faults. The compact form factor makes it a natural fit in standard residential panels, keeping spaces organized while delivering dependable safety features.

While no two electrical setups are identical, the QO120GFI offers a practical balance of safety, compatibility, and ease of use. Consider it as part of a thoughtful protection plan for critical loads with accessible panel space and standard 120V circuits.