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Square D QO360-1021 QO3601021 - 60A 3 Pole Miniature Circuit Breaker
- 60A
- 3 Pole
- Plug-On
Square D
QO360-1021
QO3601021 - 60A 3 Pole Miniature Circuit Breaker
Brand
Square D
SKU
QO360-1021
-7%
Quantity
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Square D QO3601021 - 60A 3 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Square D QO3601021 - 60A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | QO3601021 |
| Series | QO |
| Amperage | 60A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 120VAC, 240VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 240VAC, 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | QO Load Centers, NQ Panelboards, Speed-D Switchboards |
| 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 | Padlock Attachment, Handle Lock |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
Sold out
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Square D QO3601021 - 60A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | QO3601021-R |
| Series | QO |
| Amperage | 60A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 120VAC, 240VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 240VAC, 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | QO Load Centers, NQ Panelboards, Speed-D Switchboards |
| 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 | Padlock Attachment, Handle Lock |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
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Description
Built for commercial and industrial applications, the Square D QO360-1021 provides reliable 60A overcurrent protection. It features a factory-installed shunt trip, allowing the circuit to be opened remotely via a 120/208/240VAC control signal. This three-pole breaker mounts into Square D QO load centers, NQ panelboards, and Speed-D switchboards. The plug-on design ensures a secure installation.Specifications
| Brand | Square D |
|---|---|
| Part Number | QO3601021 |
| Series | QO |
| Amperage | 60A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 120VAC, 240VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 240VAC, 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | QO Load Centers, NQ Panelboards, Speed-D Switchboards |
| 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 | Padlock Attachment, Handle Lock |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip |
Product FAQs
8 answersWhat does the 1021 suffix indicate on the QO360-1021 part number?
The 1021 suffix designates that this breaker includes a factory-installed 120/208/240V AC shunt trip accessory. This allows the breaker to be opened remotely via a control signal, which is commonly used for emergency stop or remote shutdown applications.
How many pole spaces does the QO360-1021 require in a panel?
This breaker requires four pole spaces. While it is a 3-pole breaker, the factory-installed shunt trip accessory occupies one additional pole space in the load center or panelboard.
How is the shunt trip wired on the QO360-1021?
The factory-installed shunt trip features terminals that accept two 14-12 AWG copper wires. The control circuit hot and neutral wires can be connected to either terminal to provide the 120V, 208V, or 240V AC signal required to trip the breaker.
Which panelboards are compatible with the QO360-1021?
This plug-on miniature circuit breaker is compatible with Square D QO load centers, NQ panelboards, and Speed-D switchboards that accept 3-pole QO breakers.
What is the difference between the QO360-1021 and QOB360-1021?
The QO360-1021 features a plug-on mounting style for QO load centers and plug-on NQ panelboards. The QOB360-1021 is the bolt-on equivalent, designed specifically for bolt-on NQ panelboards. Both models share the same 60A rating and factory-installed shunt trip.
Does the QO360-1021 include a Visi-Trip indicator?
Yes, this breaker features the Square D Visi-Trip indicator. When the breaker trips due to an overcurrent or a shunt trip signal, a highly visible red indicator appears to help quickly identify the tripped circuit in the panel.
What type of wire can be used with the QO360-1021 terminals?
The box lugs are rated for both copper (Cu) and aluminum (Al) conductors ranging from 8 AWG to 2 AWG. Ensure proper torque specifications are followed during installation to maintain a secure connection.
Is the QO360-1021 suitable for systems with high available fault current?
This breaker has a standard interrupting rating of 10kA at 240V AC. If your system has an available fault current higher than 10kA, you must use a breaker with a higher AIC rating or an approved Square D series-rated combination.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 285 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 6/13/26
Customers say these circuit breakers arrive quickly and work as described. Fast shipping and competitive pricing are frequently mentioned, with many noting same-day or next-day delivery. Users appreciate the wide inventory, particularly for hard-to-find older-style models unavailable locally. The products function reliably and arrive in good condition. Most customers report straightforward ordering and positive interactions. However, some experienced delivery delays or received incorrect items requiring reordering. A few noted concerns about condition upon arrival or customer service responsiveness.
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Rating
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