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Square D QOB3601021 Miniature Circuit Breaker
- 60A
- 3 Pole
- Bolt-On
Square D
QOB3601021
Miniature Circuit Breaker
Brand
Square D
SKU
QOB3601021
Quantity
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Square D QOB3601021 - 60A 3 Pole Miniature Circuit Breaker
New
Quantity
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Square D QOB3601021 - 60A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | QOB360-1021 |
| Series | QOB |
| Amperage | 60A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 120/240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 240VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 8-2 AWG (Cu/Al) |
| 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 (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, HACR, RoHS |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Sold out
Quantity
Square D QOB3601021 - 60A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | QOB360-1021-R |
| Series | QOB |
| Amperage | 60A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 120/240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 240VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 8-2 AWG (Cu/Al) |
| 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 (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, HACR, RoHS |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
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Description
Engineered for advanced control, the Square D QOB3601021 includes a factory-installed shunt trip mechanism that enables remote tripping via a separate control circuit. This 60A, three-pole miniature breaker delivers reliable 10kAIC thermal-magnetic protection for 240VAC commercial and industrial systems. It features a bolt-on design for secure installation into NQ and NQOD panelboards. The unit also includes a Visi-Trip indicator to easily identify tripped status and is fully HACR rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB360-1021 |
| Series | QOB |
| Amperage | 60A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 120/240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 240VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 8-2 AWG (Cu/Al) |
| 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 (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, HACR, RoHS |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
7 answersWhich panelboards are compatible with the QOB3601021 circuit breaker?
This bolt-on miniature circuit breaker is designed specifically for Square D NQ and NQOD series panelboards. It is not compatible with standard QO load centers, which require plug-on breakers.
What does the 1021 suffix in the QOB3601021 catalog number signify?
The 1021 suffix indicates the presence of a factory-installed 120/240VAC shunt trip. This accessory allows the breaker to be tripped remotely by applying voltage to the shunt trip coil, commonly used for emergency stop or remote shutdown applications.
Can I use a standard QOB360 instead of the QOB3601021?
You can only substitute it if your application does not require remote tripping. The standard QOB360 has identical base specifications but lacks the factory-installed shunt trip required for remote disconnect systems.
Do the terminals on the QOB3601021 require copper wire?
No, the box lugs are dual-rated for both copper (Cu) and aluminum (Al) conductors ranging from 8 AWG to 2 AWG. Always ensure the wire is properly torqued and sized for a 60A load.
How can I tell if the QOB3601021 has tripped due to a fault?
This breaker features the Square D Visi-Trip indicator. When the breaker trips due to an overcurrent or short circuit, the handle moves to a center position and a high-visibility red flag appears in the indicator window.
Is the QOB3601021 rated for direct current (DC) circuits?
Yes, in addition to its AC ratings, this breaker is rated for use on 48VDC systems with a 5kAIC interrupting rating. This makes it viable for certain low-voltage DC industrial control or battery applications.
Is this 60A breaker approved for HVAC equipment?
Yes, the QOB3601021 is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment that requires this specific designation.
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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.