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Square D QO120PAF AFCI Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Square D
QO120PAF
AFCI Miniature Circuit Breaker
Brand
Square D
SKU
QO120PAF
Quantity
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Square D QO120PAF - 20A AFCI Miniature Circuit Breaker
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Description
Built for modern residential installations, the QO120PAF is a 20A single-pole combination arc-fault breaker that enhances safety while simplifying wiring. Its plug-on neutral design eliminates the traditional pigtail, saving gutter space and reducing installation time. This unit mounts exclusively into Square D QO plug-on neutral load centers. It serves as a replacement for the older QO120PCAFI model. Rated 10kAIC at 120V, it includes the signature Visi-Trip indicator for easy troubleshooting.Specifications
| Brand | Square D |
|---|---|
| Part Number | QO120PAF |
| Series | QO |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Pressure Plate |
|---|---|
| For Use With | QO Plug-On Neutral Load Centers |
| 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | AFCI |
|---|---|
| Available Options | Padlock Attachment |
| Standards | CSA C22.2 No. 5, UL 1699, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
Product FAQs
7 answersWhat panels are compatible with the QO120PAF circuit breaker?
This breaker requires a Square D QO plug-on neutral load center. It connects directly to the panel's neutral bar without a pigtail wire, so the load center must be specifically designed to accept plug-on neutral breakers.
Does the QO120PAF replace the older QO120PCAFI breaker?
Yes, the QO120PAF is the direct replacement for the discontinued QO120PCAFI model. Both are 20A single-pole combination arc fault breakers featuring a plug-on neutral connection for compatible QO panels.
How does the plug-on neutral connection impact panel wiring?
The plug-on neutral design eliminates the traditional coiled pigtail wire found on standard AFCI breakers. This reduces wire clutter, frees up gutter space, and speeds up installation in compatible QO panels.
What type of fault protection does the QO120PAF provide?
It provides standard thermal-magnetic protection against overloads and short circuits, along with combination arc fault (CAFCI) detection to mitigate dangerous series and parallel arcing conditions.
Does this breaker feature a tripped indicator?
Yes, it includes the standard Square D Visi-Trip indicator. When the breaker trips due to a fault, a highly visible red flag appears in the indicator window, allowing you to easily identify the tripped circuit in a crowded panel.
Can I use aluminum wire with the QO120PAF breaker?
Yes, the pressure plate terminals accept 12 AWG to 8 AWG aluminum wire, as well as 14 AWG to 8 AWG copper wire. Be sure to apply an approved anti-oxidant compound when terminating aluminum conductors.
What is the interrupting rating of this arc fault breaker?
The QO120PAF has a 10kA short-circuit interrupting rating at 120VAC. You must verify that the available fault current at your specific panel location does not exceed 10,000 amps.
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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