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Square D QOB220GFI GFCI Miniature Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Square D
QOB220GFI
GFCI Miniature Circuit Breaker
Brand
Square D
SKU
QOB220GFI
Quantity
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Square D QOB220GFI - 20A GFCI Miniature Circuit Breaker
New
Quantity
Quantity
Square D QOB220GFI - 20A GFCI Miniature Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | QOB220GFI |
| Series | QOB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | Square D NQ Panelboards, Square D NQOD 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | CSA C22.2 No. 144, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, RoHS Compliant |
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Square D QOB220GFI - 20A GFCI Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | QOB220GFI-R |
| Series | QOB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | Square D NQ Panelboards, Square D NQOD 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | CSA C22.2 No. 144, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, RoHS Compliant |
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Description
Built for commercial applications, the QOB220GFI delivers reliable 6mA Class A ground fault protection. This 2-pole, 20A miniature circuit breaker safeguards personnel in wet locations per NEC requirements. It mounts into Square D NQ and NQOD panelboards using a bolt-on connection. The unit includes a pigtail neutral and is rated for 10kAIC at 120/240VAC. The Visi-Trip indicator provides immediate visual confirmation of a tripped circuit, minimizing downtime.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB220GFI |
| Series | QOB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | Square D NQ Panelboards, Square D NQOD 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | CSA C22.2 No. 144, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, RoHS Compliant |
Product FAQs
7 answersCan I install the QOB220GFI in a standard QO load center?
No. The QOB220GFI is a bolt-on circuit breaker engineered specifically for Square D NQ and NQOD panelboards. Standard residential QO load centers require plug-on circuit breakers.
What is the plug-on equivalent to the QOB220GFI?
The plug-on alternative is the QO220GFI. It provides the exact same 20A, 2-pole Class A ground-fault protection but features a plug-on connection designed for standard QO load centers.
What is the difference between the QOB220GFI and the QOB220EPD?
The QOB220GFI offers Class A ground-fault protection, tripping at 6mA for personnel safety. The QOB220EPD is an Equipment Protection Device (EPD) that trips at a 30mA threshold, engineered to protect equipment rather than personnel.
Can the QOB220GFI be used on a straight 240V circuit that lacks a load neutral?
Yes. The breaker can protect 240V, 2-wire loads that do not require a load neutral connection. However, you must still land the breaker's factory-installed pigtail neutral on the panelboard neutral bar, as this connection is required to power the internal ground-fault sensing circuitry.
What are the lug torque specifications for the QOB220GFI?
The pressure plate terminals require 35.4 lb-in (4 N.m) of torque when using 14 AWG to 10 AWG wire, and 40.7 lb-in (4.6 N.m) when using 8 AWG wire.
What level of ground-fault protection does the QOB220GFI provide?
This breaker delivers Class A ground-fault protection. The internal sensor continuously compares the current leaving the breaker to the current returning, and will trip the circuit if a ground-fault leakage of 6mA or higher is detected.
How does the Visi-Trip indicator function on the QOB220GFI?
The Visi-Trip mechanism displays a bright red flag in the breaker window when it trips due to a ground fault, overload, or short circuit. The operating handle will also move to a center tripped position, making it easy to identify tripped breakers in a crowded panelboard.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 205 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
205 reviews
- BLBOOSTIX L.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/17/26QOB220
That's nice breakers!
- PHPaul H.Verified BuyerReviewingSquare D QOB330 - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/5/26Quick shipping and delivery
Shipped and delivered on time for installation at one of our projects. Thank you!
- RMRick M.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Project Mgr
Just what I needed.
- DHDoug H.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Square D QOB breakers
As always, our order arrived timely, and accurate. You can’t beat their prices that’s why we have used this company for years.
- RKRyan K.Verified BuyerReviewingSquare D QOB230VH - 30A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/1/26Awesome
Worked great