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Square D QOB215-1021 QOB2151021 - 15A 2 Pole Miniature Circuit Breaker
- 15A
- 2 Pole
- Bolt-On
Square D
QOB215-1021
QOB2151021 - 15A 2 Pole Miniature Circuit Breaker
Brand
Square D
SKU
QOB215-1021
Quantity
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Square D QOB2151021 - 15A 2 Pole Miniature Circuit Breaker
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Description
Integrating remote shutdown capabilities, this specialized QOB breaker includes a factory-installed shunt trip mechanism operating at 120 to 240VAC. It fastens firmly into Square D NQ and NQOD panelboards, providing standard thermal-magnetic protection alongside automated control options. Facility managers utilize this configuration for emergency stop applications, load shedding, or automated safety interlocks, while still benefiting from the standard Visi-Trip visual indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB215-1021 |
| Series | QOB |
| Amperage | 15A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| 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 (120/208/240VAC) |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Quick-Make/Quick-Break, Trip-Free Mechanism, Common Trip |
Product FAQs
5 answersWhich panelboards accept the Square D QOB215-1021 circuit breaker?
This bolt-on miniature circuit breaker is specifically designed for installation in Square D NQ and NQOD series panelboards. It cannot be installed in standard QO load centers, which require plug-on breakers.
What does the 1021 suffix mean on the QOB215-1021?
The 1021 suffix indicates that this breaker includes a factory-installed shunt trip accessory. This allows the breaker to be opened remotely using a 120/208/240V AC control signal, which is frequently used for emergency stop buttons or automated load shedding.
What is the difference between QO and QOB circuit breakers?
QO breakers feature a plug-on mounting design, while QOB breakers like the QOB215-1021 utilize a bolt-on connection. Bolt-on breakers are typically specified for commercial and industrial panelboards to ensure a secure connection that withstands vibration and cannot be accidentally dislodged.
What type of wire can be used with the QOB215-1021 terminals?
The pressure plate terminals accommodate 14 AWG to 8 AWG wire and are rated for both copper (Cu) and aluminum (Al) conductors. Ensure proper torque is applied during installation as specified by the manufacturer.
Does the QOB215-1021 feature a visual trip indicator?
Yes, this breaker features the Square D Visi-Trip indicator. When the breaker trips due to an overcurrent condition or a remote shunt trip command, a highly visible red indicator appears to help you quickly identify the tripped breaker in the panelboard.
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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.