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Square D QOB260-1021 QOB2601021 - 60A 2 Pole Miniature Circuit Breaker
- 60A
- 2 Pole
- Bolt-On
Square D
QOB260-1021
QOB2601021 - 60A 2 Pole Miniature Circuit Breaker
Brand
Square D
SKU
QOB260-1021
Quantity
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Square D QOB2601021 - 60A 2 Pole Miniature Circuit Breaker
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Square D QOB2601021 - 60A 2 Pole Miniature Circuit Breaker
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| Brand | Square D |
|---|---|
| Part Number | QOB2601021 |
| Series | QOB |
| Amperage | 60A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 48VDC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 8 AWG - 2 AWG (Al/Cu) |
| Max Wire | 2 AWG |
| Min Wire | 8 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 |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated |
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Square D QOB2601021 - 60A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | QOB2601021-R |
| Series | QOB |
| Amperage | 60A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 48VDC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 8 AWG - 2 AWG (Al/Cu) |
| Max Wire | 2 AWG |
| Min Wire | 8 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 |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated |
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Description
Integrating remote tripping capabilities, this 60-amp thermal-magnetic device includes a factory-installed shunt trip accessory. It provides essential 10kAIC fault protection for commercial and industrial branch circuits requiring automated or emergency disconnect functions. The unit installs securely into Square D NQ and NQOD panelboards via a robust bolt-on connection.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB2601021-R |
| Series | QOB |
| Amperage | 60A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 48VDC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 8 AWG - 2 AWG (Al/Cu) |
| Max Wire | 2 AWG |
| Min Wire | 8 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 |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated |
Product FAQs
7 answersWhat does the -1021 suffix mean on the QOB260-1021 circuit breaker?
The -1021 suffix indicates that this breaker includes a factory-installed 120/240VAC shunt trip accessory. This allows the breaker to be tripped remotely by applying voltage to the shunt trip coil, which is commonly used for emergency stops or automated control systems.
Can I install the QOB2601021 in a standard residential QO load center?
No, this is a bolt-on (QOB) breaker designed specifically for commercial NQ and legacy NQOD panelboards. Standard residential QO load centers require plug-on breakers and will not accept bolt-on models.
How does the bolt-on mounting of the QOB2601021 differ from standard plug-on breakers?
Unlike plug-on breakers that snap onto the bus bar, this bolt-on breaker physically screws into the bus bar of NQ or NQOD panelboards. This provides a more secure, vibration-resistant connection typically required in commercial and industrial applications.
Is the QOB260-1021 suitable for DC control circuits?
Yes, in addition to its standard AC ratings, this thermal-magnetic breaker is rated for 48VDC applications, making it suitable for certain DC control or battery systems where a 5kA interrupting capacity is sufficient.
What type of wire and gauge is required for the QOB2601021?
The box lug terminals on this 60A breaker are rated for both aluminum and copper conductors. They accept wire sizes ranging from 8 AWG up to 2 AWG.
Are QOB2601021 and QOB260-1021 interchangeable part numbers?
Yes, they are the exact same product. The hyphen is often omitted in distributor databases or on packaging, but both refer to the 60A, 2-pole bolt-on breaker equipped with a 120/240VAC shunt trip.
How can I tell if the QOB260-1021 has tripped remotely via the shunt trip?
This breaker features the Square D Visi-Trip indicator. Whether it trips from an overcurrent event or a remote shunt trip command, the handle will snap to a center position and a bright red indicator will appear in the window for easy identification.
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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.