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Square D QOB320VH-1021 QOB320VH1021 - 20A 3 Pole Miniature Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Square D
QOB320VH-1021
QOB320VH1021 - 20A 3 Pole Miniature Circuit Breaker
Brand
Square D
SKU
QOB320VH-1021
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Square D QOB320VH1021 - 20A 3 Pole Miniature Circuit Breaker
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Description
Engineered for commercial electrical systems, the QOB320VH-1021 delivers reliable overcurrent protection with remote tripping functionality. This 3-pole, 20A breaker handles demanding loads while offering advanced control. It mounts into Square D NQ and NQOD panelboards using a secure bolt-on connection. Rated for 22 kAIC at 240V, it features a factory-installed 120/240V AC shunt trip for remote shutdown and includes the signature Visi-Trip indicator to quickly identify tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB320VH-1021 |
| Series | QOB |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 120VAC, 22kA @ 240VAC, 22kA @ 120/240VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Cu/Al) |
| 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 (Factory Installed) |
| Standards | HACR, UL 489, CSA C22.2 No. 5 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, High Interrupting Capacity |
Product FAQs
6 answersWhat panelboards accept the QOB320VH-1021 circuit breaker?
This bolt-on breaker is specifically designed for installation in Square D NQ and NQOD series panelboards. It is not compatible with standard QO load centers, which require plug-on breakers.
What does the -1021 suffix indicate on this Square D breaker?
The -1021 suffix designates that the breaker comes with a factory-installed 120/240VAC shunt trip accessory. This allows the breaker to be opened remotely via an external control signal.
What does the VH designation mean in the QOB320VH-1021 part number?
The VH indicates a higher interrupting rating. This model provides a 22kAIC rating at 120/240VAC, which is higher than the standard 10kAIC rating found on base QOB breakers.
What wire sizes and materials are compatible with the terminals on this breaker?
The pressure plate terminals are rated for 14 AWG to 8 AWG wire and accept both copper (Cu) and aluminum (Al) conductors.
How does the breaker indicate a tripped condition?
It features the Square D Visi-Trip indicator. When the breaker trips due to an overload, short circuit, or a remote shunt trip command, a highly visible red flag appears in the indicator window to help quickly identify the faulted circuit.
Is the QOB320VH-1021 a direct replacement for standard QOB320 breakers?
It shares the same physical footprint and bolt-on mounting as a standard QOB320, but it includes a 22kAIC interrupting rating and a factory-installed 120/240VAC shunt trip. It should only be used if the panel requires the higher fault rating or remote tripping capabilities.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 206 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
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.