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Square D QOB290VH Miniature Circuit Breaker
- 90A
- 2 Pole
- Bolt-On
Square D
QOB290VH
Miniature Circuit Breaker
Brand
Square D
SKU
QOB290VH
Quantity
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Square D QOB290VH - 90A 2 Pole Miniature Circuit Breaker
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Description
Part of the QO family, this two-pole 90A miniature circuit breaker offers a Very High 22kA interrupting rating for commercial and industrial systems requiring robust fault protection. The unit fastens securely into Square D NQ and NQOD panelboards, utilizing a bolt-on connection to maintain continuity in demanding environments. It features a thermal-magnetic trip mechanism for reliable overload response and includes the Visi-Trip red indicator to simplify troubleshooting procedures.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB290VH |
| Series | QOB |
| Amperage | 90A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 240VAC, 22kA @ 120/240VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Square D NQ Panelboards, Square D NQOD Panelboards |
| Wire Gauge | 4 AWG - 2/0 AWG (Al/Cu) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
6 answersWhat is the difference between the QOB290VH and the QO290VH?
The QOB290VH is a bolt-on circuit breaker designed for commercial NQ and NQOD panelboards. The QO290VH is the plug-on equivalent designed for standard QO load centers.
What does the VH suffix mean on this Square D breaker?
The VH suffix designates a Very High interrupting rating. While standard QOB breakers typically have a 10kAIC rating, the QOB290VH is rated to safely interrupt up to 22,000 amps (22kAIC) at 120/240VAC.
How many panel spaces does this 90A breaker occupy?
The QOB290VH requires two standard 3/4-inch spaces in a compatible Square D NQ or NQOD panelboard.
Does the QOB290VH feature a tripped circuit indicator?
Yes, it includes the Square D Visi-Trip indicator. When the breaker trips, the handle moves to a center position and a bright red indicator appears in a window, allowing you to quickly identify the faulted circuit.
Is the QOB290VH suitable for use with HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires this specific overcurrent protection standard.
What is the recommended tightening torque for the QOB290VH lugs?
The box lugs on this breaker require a tightening torque of 49.6 lb-in (5.6 N.m). Always verify the exact torque specifications printed on the side of the breaker prior to terminating the conductors.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 205 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
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