Square D QOB120VH-1021 QOB120VH1021 - 20A 1 Pole Miniature Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
Quantity
Square D QOB120VH1021 - 20A 1 Pole Miniature Circuit Breaker
New
Quantity
Description
Built to accommodate remote shutdown requirements, this 20-amp single-pole device includes a factory-installed shunt trip mechanism. The unit fastens into Square D NQ and NQOD commercial panelboards via a secure bolted connection. With a 22kAIC interrupt capacity and standard Visi-Trip functionality, it delivers both high-performance fault clearing and immediate visual status indication.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB120VH-1021 |
| Series | QOB |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | NQ Panelboards, 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 |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (120/208/240VAC) |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, High Interrupting Capacity, SWD Rated |
Product FAQs
5 answersWhat does the 1021 suffix mean on the QOB120VH-1021?
The 1021 suffix indicates that this circuit breaker includes a factory-installed 120/240VAC shunt trip accessory. This allows the breaker to be tripped remotely by applying a voltage signal, which is commonly used for emergency stop circuits or automated shutdown systems.
How many panel spaces does the QOB120VH-1021 require?
Although it is a 1-pole circuit breaker, it requires two pole spaces (1.5 inches of width) in the panelboard. The factory-installed shunt trip accessory occupies the second space.
Can I install this QOB breaker in a standard QO load center?
No. QOB circuit breakers feature a bolt-on mounting design intended specifically for commercial and industrial NQ and NQOD panelboards. They are not compatible with standard residential QO plug-on load centers.
What does the VH designation indicate in the part number?
The VH indicates that this is a high-interrupting circuit breaker. It provides a 22kAIC rating at 120/240VAC, which is higher than the standard 10kAIC rating found on base QOB models.
Does this breaker feature a tripped status indicator?
Yes, it includes the standard Square D Visi-Trip indicator. When the breaker trips due to an overcurrent or a remote shunt trip signal, a red indicator flag appears in the window to help quickly identify the tripped breaker in a panelboard.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 206 reviews.
- KHKristopher H.Verified BuyerReviewingSquare D QOB120GFI - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/28/26Great Price!
Great price. Fast delivery. My local electric distributor wanted double for the same breaker, so it was a no brainer to order this one. Ordered another one since with the same great service.
- 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.