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Square D QOB115 Miniature Circuit Breaker
- 15A
- 1 Pole
- Bolt-On
Square D
QOB115
Miniature Circuit Breaker
Brand
Square D
SKU
QOB115
Quantity
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Square D QOB115 - 15A 1 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Square D QOB115 - 15A 1 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | QOB115-R |
| Series | QOB |
| Amperage | 15A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 48VDC |
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | qob115 |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | SWD Rated, HACR Rated, Visual Trip Indicator |
Sold out
Quantity
Square D QOB115 - 15A 1 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | QOB115-R |
| Series | QOB |
| Amperage | 15A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 48VDC |
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | qob115 |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | SWD Rated, HACR Rated, Visual Trip Indicator |
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Description
Engineered for commercial branch circuits, the QOB115 delivers reliable thermal-magnetic protection. This single-pole miniature circuit breaker is rated for 15 amps at 120/240VAC. Installation is straightforward as this unit mounts into Square D NQ and NQOD panelboards. The bolt-on design ensures a secure, vibration-resistant connection to the busbar. Equipped with a Visi-Trip indicator, this breaker allows users to quickly identify a tripped circuit. It is HACR and SWD rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB115-R |
| Series | QOB |
| Amperage | 15A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 48VDC |
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | qob115 |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | SWD Rated, HACR Rated, Visual Trip Indicator |
Product FAQs
8 answersWhat is the physical width of the QOB115 in a panelboard?
The QOB115 is a standard Square D QO-format breaker, which requires 3/4-inch of space per pole on the panelboard bus.
Can the QOB115 be installed in a standard Square D QO residential load center?
No. The QOB115 features a bolt-on mounting design intended strictly for Square D NQ and NQOD commercial panelboards. Standard QO load centers require plug-on circuit breakers.
Is the QOB115 approved for switching fluorescent lighting loads?
Yes. This 15-amp breaker carries an SWD (Switching Duty) rating, meaning it is certified for regular switching of 120V fluorescent lighting circuits.
Does this circuit breaker carry an HACR rating?
Yes. The QOB115 is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires HACR-type overcurrent protection.
How does the Visi-Trip indicator work on the QOB115?
The breaker features a built-in Visi-Trip visual indicator. When the breaker trips due to an overload or short circuit, a bright red mechanical flag appears in the indicator window to help quickly identify the faulted circuit in a busy panelboard.
Are there versions of the 15-amp 1-pole QOB breaker with higher interrupting ratings?
Yes. If your application requires a higher short-circuit current rating than the 10kA provided by the standard QOB115, you can use the QOB115VH (rated for 22kA at 120/240VAC) or the QHB115 (rated for 65kA at 120/240VAC).
How is the load wire secured to the QOB115?
The load side utilizes a box-style pressure plate terminal designed to securely clamp copper or aluminum conductors. Installers must follow the exact torque specifications printed directly on the breaker body to prevent loose connections or arcing.
Does the QOB115 require a separate mounting screw for installation?
No. The breaker includes a captive screw for the bus connection. As a bolt-on breaker, it secures directly to the panelboard bus bar to provide a vibration-resistant connection typical in commercial and industrial applications.
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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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