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Square D QOB245GFI GFCI Miniature Circuit Breaker
- 45A
- 2 Pole
- Bolt-On
Square D
QOB245GFI
GFCI Miniature Circuit Breaker
Brand
Square D
SKU
QOB245GFI
Quantity
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Square D QOB245GFI - 45A GFCI Miniature Circuit Breaker
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Description
Built for commercial applications, this 45A miniature breaker delivers reliable 6mA ground fault protection. It installs into Square D NQ and NQOD panelboards using a secure bolt-on connection. Rated at 10kAIC, the unit features Visi-Trip technology for quick fault identification and includes a pigtail neutral to meet NEC requirements for wet or damp locations.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB245GFI |
| Series | QOB |
| Amperage | 45A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 14-6 AWG (Cu), 12-4 AWG (Al) |
| Max Wire | 6 AWG (Cu), 4 AWG (Al) |
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
| Accessories | Pigtail Neutral, Load Side Lugs Included |
| Standards | CSA C22.2 No. 144, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, Ground Fault Protection |
Product FAQs
7 answersWhat panels are compatible with the QOB245GFI?
This bolt-on breaker is designed specifically for Square D NQ and NQOD panelboards. It cannot be installed in standard QO residential load centers.
Can I use the QOB245GFI in a standard QO load center?
No. The QOB245GFI uses a bolt-on mounting design. Standard QO load centers require plug-on breakers.
What is the plug-on equivalent to the QOB245GFI?
The direct plug-on equivalent for use in standard Square D QO load centers is catalog number QO245GFI.
How many panel spaces does the QOB245GFI require?
As a 2-pole breaker, it requires two standard panel spaces in an NQ or NQOD panelboard.
How is the neutral connection made on the QOB245GFI?
This breaker is equipped with a pigtail neutral wire. The pigtail must be routed and connected directly to the neutral bar of the panelboard for the ground fault circuitry to function.
What wire sizes are accepted by the QOB245GFI terminals?
The box lugs accept 14 to 6 AWG copper wire or 12 to 4 AWG aluminum wire.
What is the ground fault trip threshold for the QOB245GFI?
The QOB245GFI provides Class A ground fault protection, meaning it is calibrated to trip when a ground fault of 6mA or greater is detected.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 212 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 3/11/26
Customers say these electrical breakers arrive exactly as ordered and work perfectly for their intended applications. They consistently praise the competitive pricing, which many report is significantly lower than local suppliers. Fast shipping and prompt delivery are frequently highlighted, with many receiving orders within days or even next-day delivery for urgent needs. The breakers arrive well-packaged and in excellent condition. Many reviews emphasize the company's extensive inventory availability, particularly for hard-to-find breakers. One customer experienced difficulty with order cancellation and was charged a restocking fee, which caused dissatisfaction.
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Rating
212 reviews
- SJSheldon J. H.Verified BuyerReviewingSquare D QOB240 - 40A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/12/26Installer
Good price, worked great.
- MLMike L.Verified BuyerReviewingSquare D QOB250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/9/26breaker orders
Breaker worked out great
Can not be happier with the quick shipping
- RCRichard C.Verified BuyerReviewingSquare D QOB380 - 80A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/7/26Great price quick turn around
Thank you for getting me the breaker in a timely fashion
- DSDarren S.Verified BuyerReviewingSquare D QOB250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/5/26Airport taxi lighting
After contactor replacement we discovered bad breakers and were able to get replacements from Super Breakers in 2 days. THANK YOU SUPER BREAKERS..
- MRMiguel R.Verified BuyerReviewingSquare D QOB220GFI - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/1/26Excellent
Excellent product and service