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Square D QOB280H Miniature Circuit Breaker
- 80A
- 2 Pole
- Bolt-On
Square D
QOB280H
Miniature Circuit Breaker
Brand
Square D
SKU
QOB280H
Quantity
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Square D QOB280H - 80A 2 Pole Miniature Circuit Breaker
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Description
Engineered for robust commercial power distribution, the Square D QOB280H is a 2-pole, 80-amp miniature circuit breaker providing dependable thermal-magnetic protection. Designed for a firm mechanical connection, this breaker bolts into Square D NQ and NQOD panelboards. The box lug terminals accommodate 4 AWG to 2/0 AWG wire sizes. With a 10kAIC rating at 240VAC, it handles standard fault currents while offering the convenience of a Visi-Trip indicator for rapid troubleshooting.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB280H |
| Series | QOB |
| Amperage | 80A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC, 10kA @ 120/240VAC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | NQ Panelboards, 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, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated |
Product FAQs
6 answersWhat panelboards are compatible with the QOB280H?
The QOB280H is a bolt-on circuit breaker designed specifically for Square D NQ and NQOD panelboards. It cannot be installed in standard QO load centers, which require plug-on breakers.
How does the QOB280H mount to the panelboard?
This breaker features a bolt-on connection. It secures directly to the bus bar of NQ or NQOD panelboards using screws, providing a firm mechanical connection suitable for commercial and industrial applications.
Does the QOB280H include a visual trip indicator?
Yes, this breaker features the Square D Visi-Trip indicator. When the breaker trips, a highly visible red indicator appears in the window, allowing for quick identification of the faulted circuit in a busy panel.
What is the plug-on equivalent of the QOB280H?
For standard QO load centers that require a plug-on connection, the equivalent 80-amp, 2-pole breaker is the QO280H.
What type of protection does the thermal-magnetic trip unit provide?
The thermal-magnetic mechanism in the QOB280H provides two types of protection. The thermal component offers a long-time delay to prevent nuisance tripping from temporary overloads, while the magnetic component provides an instantaneous trip to quickly clear severe short circuits.
Is the QOB280H 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.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 211 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
211 reviews
- MLMike L.Verified BuyerReviewingSquare D QOB250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/9/26breaker orders
Breaker worked out great
Can not be happier with the quick shipping
- RCRichard C.Verified BuyerReviewingSquare D QOB380 - 80A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/7/26Great price quick turn around
Thank you for getting me the breaker in a timely fashion
- DSDarren S.Verified BuyerReviewingSquare D QOB250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/5/26Airport taxi lighting
After contactor replacement we discovered bad breakers and were able to get replacements from Super Breakers in 2 days. THANK YOU SUPER BREAKERS..
- MRMiguel R.Verified BuyerReviewingSquare D QOB220GFI - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/1/26Excellent
Excellent product and service
- MRMiguel R.Verified BuyerReviewingSquare D QOB230GFI - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/1/26Excellent
Excellent product and service