Square D QOB220VH-1021 QOB220VH1021 - 20A 2 Pole Miniature Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Quantity
Square D QOB220VH1021 - 20A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Engineered for commercial power distribution, the Square D QOB220VH-1021 is a 2-pole, 20A miniature circuit breaker. It features a factory-installed 120/240VAC shunt trip mechanism, allowing for remote tripping of the circuit when required by safety systems. This unit utilizes a bolt-on mounting style for secure connections. It is specifically designed to install into Square D NQ and legacy NQOD panelboards.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB220VH-1021 |
| Series | QOB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| 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 (Factory Installed) |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Mercury Free, RoHS Compliant |
Product FAQs
7 answersWhat does the 1021 suffix mean on the QOB220VH1021?
The 1021 suffix indicates that this breaker includes a factory-installed 120/208/240V AC shunt trip accessory. This allows the breaker to be tripped remotely, which is commonly used for emergency shutdown circuits or fire alarm integration.
How much panel space does the QOB220VH1021 require?
Although it is a 2-pole breaker, the factory-installed shunt trip accessory requires an additional pole space. The total width is 2.25 inches, meaning it will occupy three standard 3/4-inch spaces in your NQ or NQOD panelboard.
Can I install this breaker in a standard QO load center?
No. The QOB220VH1021 features a bolt-on connection designed specifically for Square D NQ and NQOD panelboards. For standard residential QO load centers, you would need the plug-on equivalent, which is the QO220VH1021.
What does the VH designate in the QOB220VH1021 catalog number?
The VH designates a higher interrupting rating. While standard QOB breakers are rated at 10 kAIC, the VH series provides a 22 kAIC interrupting capacity at 120/240V AC, making it suitable for systems with higher available fault currents.
Does the QOB220VH1021 feature a Visi-Trip indicator?
Yes, like most Square D QO and QOB breakers, this model includes a Visi-Trip indicator. When the breaker trips due to an overcurrent, short circuit, or a remote shunt trip activation, the handle snaps to a center position and a red indicator appears in the window for easy identification.
What is the purpose of the shunt trip on this breaker?
The factory-installed 120/208/240V AC shunt trip allows the breaker to be opened from a remote location. This is frequently used for emergency power-off systems, elevator controls, or fire alarm integration to safely disconnect power to a circuit when a hazard is detected.
Is the QOB220VH1021 suitable for HVAC applications?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires multi-motor and combination load protection.
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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