Square D QOB120VHAFI AFCI Miniature Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
Quantity
Square D QOB120VHAFI - 20A AFCI Miniature Circuit Breaker
New
Quantity
Description
Rated for a higher 22kAIC interrupting capacity, this 20-amp single-pole breaker delivers branch and feeder arc-fault mitigation for demanding environments. The bolt-on design ensures a secure mechanical connection within Square D NQ and legacy NQOD panelboards. While this specific model is succeeded by the combination-type QOB120VHCAFI, it remains a viable exact-match replacement for existing 120VAC commercial installations. A pigtail neutral and Visi-Trip flag are included standard.Specifications
| Brand | Square D |
|---|---|
| Series | QOB |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | Square D NQ Panelboards, Square D NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Al/Cu) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | AFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral, Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, UL 1699, HACR |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Combination Arc Fault |
Product FAQs
5 answersCan I install the QOB120VHAFI in a standard Square D QO load center?
No. The QOB120VHAFI features a bolt-on mounting design intended for Square D NQ and NQOD panelboards. Standard residential QO load centers require plug-on circuit breakers.
What does the "VH" in the QOB120VHAFI catalog number indicate?
The "VH" designates a higher interrupting rating of 22kAIC at 120/240VAC. Standard QOB breakers without the VH designation typically have a 10kAIC rating.
Is the QOB120VHAFI a Combination AFCI or a Branch/Feeder AFCI?
The "AFI" suffix indicates this is a Branch/Feeder Arc Fault Circuit Interrupter, which is designed to detect parallel arcing. Combination AFCI breakers, which detect both parallel and series arcing, use the "CAFI" suffix.
How is the neutral connected on the QOB120VHAFI?
This breaker features a pigtail neutral connection. The attached white pigtail wire must be routed and secured to the neutral bus bar in the panelboard for the arc fault detection circuitry to function correctly.
Can the QOB120VHAFI be used on a multi-wire branch circuit with a shared neutral?
No. Single-pole AFCI breakers cannot be used on multi-wire branch circuits. A shared neutral will cause the breaker to trip due to current imbalance. A two-pole AFCI breaker is required for shared neutral applications.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 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