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Square D QO115GFI GFCI Miniature Circuit Breaker
- 15A
- 1 Pole
- Plug-On
Square D
QO115GFI
GFCI Miniature Circuit Breaker
Brand
Square D
SKU
QO115GFI
Quantity
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Square D QO115GFI - 15A GFCI Miniature Circuit Breaker
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Description
Engineered for residential and commercial applications, this 15A single-pole breaker delivers Class A 6mA ground-fault protection. It helps facilities meet NEC requirements for wet or damp locations. The plug-on design installs into Square D QO load centers and NQ panelboards, utilizing a standard pigtail neutral connection. It accepts 14-8 AWG copper or 12-8 AWG aluminum wiring. Featuring a 10kAIC rating at 120VAC, the unit includes the Visi-Trip indicator for rapid fault identification.Specifications
| Brand | Square D |
|---|---|
| Part Number | QO115GFI |
| Series | QO |
| Amperage | 15A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | QO |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | QO Load Centers, NQ Panelboards |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LIG |
| Trip Function | Long-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Fixed |
| Special Classification | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | CSA C22.2 No. 5, HACR, RoHS, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, SWD Rated |
Product FAQs
8 answersWill the QO115GFI fit in a Square D Homeline load center?
No. Homeline panels require 1-inch format HOM breakers. The QO115GFI is a 3/4-inch format breaker designed specifically for QO load centers and NQ panelboards.
Does this breaker require a Plug-On Neutral panel to function?
No. The QO115GFI features a pigtail neutral wire. It can be installed in standard QO load centers or NQ panelboards by landing the coiled white neutral wire directly on the panel neutral bus bar.
What is the ground fault trip threshold for this breaker?
The QO115GFI is a Class A Ground Fault Circuit Interrupter. It provides personnel protection by tripping when ground fault current reaches or exceeds 6 mA.
What is the catalog number for the Plug-On Neutral equivalent of this breaker?
The Plug-On Neutral version is catalog number QO115PGFI. The Plug-On Neutral version eliminates the pigtail wire but requires a compatible Plug-On Neutral QO load center.
Does the QO115GFI provide arc fault protection?
No, this is a Ground Fault Circuit Interrupter only. If you need dual function protection for both arc faults and ground faults, the pigtail equivalent is catalog number QO115DF.
Can the QO115GFI be reverse fed for use as a backfed main breaker?
No. Square D QO circuit breakers with the GFI suffix contain electronic components that are directional. Backfeeding this GFCI breaker will damage its internal electronics.
Can I use this 1-pole GFCI on a multi-wire branch circuit with a shared neutral?
No. A 1-pole GFCI breaker cannot be used on a multi-wire branch circuit because shared return currents will cause nuisance tripping. A 2-pole GFCI breaker, such as the QO215GFI, is required for shared neutral applications.
How can I tell if this breaker has tripped?
Like all Square D QO breakers, the QO115GFI features a Visi-Trip indicator. When the breaker trips due to an overcurrent or ground fault condition, the handle moves to the center position and a high-visibility red flag appears in the indicator window.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 285 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 6/13/26
Customers say these circuit breakers arrive quickly and work as described. Fast shipping and competitive pricing are frequently mentioned, with many noting same-day or next-day delivery. Users appreciate the wide inventory, particularly for hard-to-find older-style models unavailable locally. The products function reliably and arrive in good condition. Most customers report straightforward ordering and positive interactions. However, some experienced delivery delays or received incorrect items requiring reordering. A few noted concerns about condition upon arrival or customer service responsiveness.
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Rating
285 reviews
- GCGerard C.Verified BuyerReviewingSquare D QO130GFI - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/21/26Great !
I could not find the breaker in hardwood stores. Superbreakers took car of it in a week.
- RHRoy H.Verified BuyerReviewingSquare D QO280 - 80A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/17/26Square D QO280 - 80A 2 Pole Miniature Circuit Breaker
Exactly as described
- KWKevin W.Verified BuyerReviewingSquare D QO120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/15/26Great Price
Brand spanking new!
- CEchristopher e.Verified BuyerReviewingSquare D QO115PDF - 15A Dual Function Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26My breakers
Had a hard time locating these breakers locally, when I did find 1 they wanted to charge me triple what superbreakers charged. Items delivered exactly when they said they would, were exactly what I ordered. Appreciated the ease of ordering, definitely my go to from this point on
- JCJerry C.Verified BuyerReviewingSquare D QO250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/8/26Great quality
No issues