Square D QO1151021 Miniature Circuit Breaker
- 15A
- 1 Pole
- Plug-On
Quantity
Square D QO1151021 - 15A 1 Pole Miniature Circuit Breaker
New
Quantity
Description
Engineered for commercial and industrial applications, this 15-amp single-pole unit features a factory-installed 120/240VAC shunt trip mechanism. The integrated accessory allows facility managers to remotely open the circuit for emergency shutdowns or automated control systems. It installs into standard Square D QO load centers, as well as NQ and legacy NQOD panelboards. Standard Visi-Trip technology provides clear visual indication when a fault occurs, reducing troubleshooting time.Specifications
| Brand | Square D |
|---|---|
| Series | QO |
| Amperage | 15A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | QO |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | QO Load Centers, 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 | Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (120-240VAC) |
| Standards | CSA C22.2 No. 5, UL 489, HACR Rated |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
6 answersWhich panels are compatible with the QO1151021 circuit breaker?
This plug-on breaker is designed for use in Square D QO load centers, NQ panelboards, and legacy NQOD panelboards.
What does the 1021 suffix indicate on this QO breaker?
The 1021 suffix means the breaker includes a factory-installed 120/240VAC shunt trip mechanism. This allows the circuit to be opened remotely via a control signal for emergency shutdowns or automated control.
How many panel spaces does the QO1151021 require?
Although it is a 1-pole breaker, it requires two standard 3/4-inch panel spaces (1.5 inches total width) to accommodate the factory-installed shunt trip accessory.
Does this breaker include Visi-Trip technology?
Yes, it features a Visi-Trip indicator that provides a clear visual confirmation when the breaker has tripped, which helps reduce troubleshooting time in the panel.
Is the QO1151021 rated for switching duty and HVAC equipment?
Yes, this 15A breaker is both SWD (Switching Duty) rated for controlling fluorescent lighting circuits and HACR rated for use with heating, air conditioning, and refrigeration equipment.
Is there a bolt-on equivalent for the QO1151021?
Yes, the QOB1151021 is the direct bolt-on equivalent. It features the same 15A rating and factory-installed shunt trip but is designed for bolt-on installation in NQ and NQOD panelboards.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 285 reviews.
- GCGerard C.Verified BuyerReviewingSquare D QO130GFI - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/21/26Great !
I could not find the breaker in hardwood stores. Superbreakers took car of it in a week.
- RHRoy H.Verified BuyerReviewingSquare D QO280 - 80A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/17/26Square D QO280 - 80A 2 Pole Miniature Circuit Breaker
Exactly as described
- KWKevin W.Verified BuyerReviewingSquare D QO120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/15/26Great Price
Brand spanking new!
- CEchristopher e.Verified BuyerReviewingSquare D QO115PDF - 15A Dual Function Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26My breakers
Had a hard time locating these breakers locally, when I did find 1 they wanted to charge me triple what superbreakers charged. Items delivered exactly when they said they would, were exactly what I ordered. Appreciated the ease of ordering, definitely my go to from this point on
- JCJerry C.Verified BuyerReviewingSquare D QO250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/8/26Great quality
No issues