Square-D Qwik-Gard breakers simplify your electrical layouts, save panel space, and meet safety codes without extra wiring.
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Product Training Product Safety Product Guides Product News Featured ProductsWhen you’re wiring up a residential or a small commercial space, electrical safety isn’t optional. That’s where Square D Qwik-Gard breakers come into play. These compact molded case circuit breakers do more than just trip when there’s an overload—they also protect you from ground faults that can lead to electrical shocks.
If you’ve ever had to install a GFCI receptacle, you know how time-consuming and messy that can get. Square-D Qwik-Gard breakers give you that protection directly at the panel, simplifying your layout and keeping your circuits safer from the start.
Why Qwik-Gard Breakers for Overcurrent Protection?
Think of Square-D Qwik-Gard breaker as all-in-one safety tool. They combine thermal-magnetic overcurrent protection with Class A GFCI (Ground Fault Circuit Interrupter) technology— built right into the breaker. Instead of running wiring to separate GFCI outlets, you just install a Qwik-Gard breaker, and you’re covered. These breakers are designed to trip when they detect ground faults as low as 6 milliamps, helping you prevent shock hazards in wet or outdoor areas.
You’ll find Qwik-Gard options in 1-, 2-, or 3-pole configurations, covering everything from commercial kitchen outlets to water heaters and spa circuits. With interrupting ratings up to 10,000 AIR, you’ll like knowing your panel is protected during short-circuit conditions. Plus, the Visi-Trip indicator lets you instantly spot which breaker has tripped—so no more trial and error.
Code-Compliant GFCI Protection for Commercial, Residential Panels
1. Code-Compliant GFCI Protection in Critical Areas
If you’re wiring in a light commercial or residential setting, building codes requires GFCI protection—and that’s exactly what Square-D Qwik-Gard breakers deliver. Instead of dealing with multiple GFCI receptacles scattered throughout the jobsite, you just handle it all from the panel. It’s cleaner, faster, and fully compliant.
2. Built for Residential and Light Commercial Use
Whether you’re setting up a new power panel or handling light commercial upgrades, Qwik-Gard breakers are a smart solution. They fit easily into Square D QO load centers, giving you reliable GFCI protection across the board. For contractors, that means fewer callbacks and code violations.
3. Compatible with QO Load Centers and Panelboards
Not only do Square-D Qwik-Gard breakers work perfectly in QO Load Centers and Panelboards—they also have bolt-on QOB versions for NQ and NQOD panelboards. Need help installing one? Check out this step-by-step installation guide to make sure your setup is correct. Also see our circuit breaker install tips and advice.
How Qwik-Gard Breakers Support GFCI for Your Project
| Feature | Example |
| Integrated GFCI Protection | Instead of installing individual GFCI outlets in a garage, you use one Qwik-Gard breaker in the panel—faster install and cleaner finish. |
| Space-Saving Design | In a tight load center with limited slots, one Qwik-Gard breaker replaces a standard breaker and a GFCI device. |
| Quick Visual Troubleshooting with Visi-Trip | The red indicator lets your tech instantly see which breaker tripped during a service call, saving time and hassle. |
| Reliable Overcurrent + Ground Fault Sensing | A kitchen outlet with a ground fault trips the breaker immediately—no guesswork or dangerous live wires left behind. |
| UL 943 Class A Compliance | You meet NEC code requirements for wet locations without needing to research or buy separate GFCI receptacles. |
If you’re looking to simplify your electrical layouts, save panel space, and meet safety codes without extra wiring, Square D’s Qwik-Gard breakers are a great way to do this. Want help picking the right model? Contact Relectric tech support.
What You Should Know About Qwik-Gard Vs. Other Breakers
■ What is a Qwik-Gard breaker, and how is it different from a standard breaker?
🟩 A Qwik-Gard breaker combines traditional overcurrent protection with built-in GFCI (Ground Fault Circuit Interrupter) protection. Unlike standard breakers, it can detect dangerous ground faults and shut off power, helping prevent electrical shocks.
■ Where should I use a Qwik-Gard breaker in my electrical system?
🟩 These breakers are good for wet or damp locations like kitchens, bathrooms, garages, basements, and outdoor circuits—anywhere that NEC code requires GFCI protection.
■ Can Qwik-Gard breakers be used in commercial applications?
🟩 Yes, Qwik-Gard breakers are suitable for both residential and light commercial installations. They offer flexibility and reliability in settings where GFCI protection is needed.
■ Are these breakers compatible with all Square D panels?
🟩 Qwik-Gard breakers work with Square D QO load centers. If you’re using NQ or NQOD panelboards, you’ll want the bolt-on QOB version instead.
■ What is the advantage of using a breaker with built-in GFCI vs. a GFCI receptacle?
🟩 Using a Qwik-Gard breaker simplifies installation by handling GFCI protection directly at the panel. This means less wiring, no need for multiple GFCI receptacles, and a cleaner setup.
■ How do I know if a Qwik-Gard breaker has tripped?
🟩 Look for the Visi-Trip indicator—a red flag on the breaker handle that instantly shows which breaker has tripped, making troubleshooting quick and easy.
■ What certifications do Qwik-Gard breakers meet?
🟩 Qwik-Gard breakers comply with UL 943 Class A standards for GFCI protection, so they’re up to the task for code-compliant installations.
Glossary of Terms for Square D GFCI Breakers
Visi-Trip Indicator
A visual red indicator on Square D breakers that shows when a breaker has tripped, making it easier to identify and reset.
Interrupting Rating (AIR)
The maximum fault current that a breaker can safely interrupt without being damaged. For Qwik-Gard breakers, this can be up to 10,000 amps.
QO Load Center
A type of Square D panelboard specifically designed to house QO-style circuit breakers. Known for quick installation and reliability.
Bolt-On Breaker (QOB)
A version of a circuit breaker that bolts into place on the panelboard bus instead of snapping on. Used in commercial-grade applications like NQ and NQOD panelboards.
Class A GFCI
A GFCI type that trips when a ground fault current exceeds 6 milliamps. Required by code in most residential and commercial applications where GFCI protection is mandated.
NEC (National Electrical Code)
The benchmark safety standard for electrical installations in the United States, dictating where and how GFCI protection must be applied.
Ground Fault
An unintentional path between a power source and a grounded surface. Ground faults can lead to shock hazards if not quickly interrupted.
Plug-On Installation
A method of installing a breaker by snapping it into place on the panel’s bus bar, commonly used in residential load centers for easy setup.
Popular Models
| Model Number | Amperage | Poles | Voltage | Notes |
| QO115GFI | 15A | 1 | 120V | Single-pole, Plug-on GFCI |
| QO120GFI | 20A | 1 | 120V | Single-pole, Plug-on GFCI |
| QO125GFI | 25A | 1 | 120V | Single-pole, Plug-on GFCI |
| QO130GFI | 30A | 1 | 120V | Single-pole, Plug-on GFCI |
| QO240GFI | 40A | 2 | 240V | Two-pole, Plug-on GFCI |
| QO250GFI | 50A | 2 | 240V | Two-pole, Plug-on GFCI |
| QO260GFI | 60A | 2 | 240V | Two-pole, Plug-on GFCI |
| QO215GFI | 15A | 2 | 120/240V | Two-pole, Plug-on GFCI |
| QO220GFI | 20A | 2 | 120/240V | Two-pole, Plug-on GFCI |
| QOB120GFI | 20A | 1 | 120V | Single-pole, Bolt-on GFCI (for NQ/NQOD panels) |