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Square D QOU3601021 Miniature Circuit Breaker
- 60A
- 3 Pole
- Unit Mount
Square D
QOU3601021
Miniature Circuit Breaker
Brand
Square D
SKU
QOU3601021
Quantity
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Square D QOU3601021 - 60A 3 Pole Miniature Circuit Breaker
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Description
The QOU3601021 is a 3-pole, 60A miniature circuit breaker from Square D. It provides robust overcurrent protection and features a factory-installed shunt trip for remote tripping capabilities. This unit-mount breaker is designed for flexible installation, fitting onto DIN rail systems and OEM panels. It includes reversible line and load box lugs for straightforward wiring. Rated at 10kAIC at 240VAC, it incorporates the Visi-Trip indicator to easily identify tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Series | QOU |
| Amperage | 60A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 120/240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QOU |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | DIN Rail Systems, OEM Panels, Control Panels, Enclosures |
| Wire Gauge | 14-2 AWG (Al/Cu) |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Mounting Feet, Padlock Attachment, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489, HACR Rated |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
Product FAQs
6 answersWhat does the 1021 suffix mean in the QOU3601021 catalog number?
The 1021 suffix indicates that this breaker includes a factory-installed 120/240VAC shunt trip. This allows the breaker to be opened remotely via an external control signal, which is commonly required for emergency stop circuits or automated panel shutdowns.
Are the line and load connections on this QOU breaker reversible?
Yes, Square D QOU breakers feature reversible line and load box lugs. You can feed power from either the top or the bottom terminals without affecting the thermal-magnetic protective functions.
What type of DIN rail is required to mount the QOU3601021?
This unit-mount breaker is designed to snap directly onto standard 35mm symmetrical DIN rail. It can also be surface-mounted or flush-mounted in OEM panels and enclosures using standard mounting feet.
Can I use the QOU3601021 in a standard Square D QO load center?
No. While it shares the same thermal-magnetic trip technology as the QO family, the QOU series is a unit-mount breaker designed for DIN rail or surface mounting in control panels. It does not have the plug-on jaw required for standard QO load centers.
Can this breaker be used in low-voltage battery or telecommunications systems?
Yes, it is fully rated for direct current applications up to 48VDC. This makes it a reliable choice for DC control panels, battery backups, and telecom distribution where a 5kA interrupting capacity is sufficient.
How can I visually verify if this breaker has tripped due to a fault?
This model features the Square D Visi-Trip indicator. When the breaker trips, the handle snaps to a midpoint position and a highly visible red indicator appears, allowing you to quickly identify the faulted circuit in a crowded control panel.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 106 reviews.
Reviews Summary
Generated by AI from 99 most recent customer reviews
Last updated 5/14/26
Customers say these circuit breakers function properly and arrive quickly. Many reviews highlight fast shipping, competitive pricing, and reliable product condition upon arrival. Users appreciate the wide selection, including hard-to-find models, and note the breakers work as expected for various applications. Common feedback addresses quick order processing and easy website navigation. Most customers report satisfaction with value and delivery speed, with many indicating they will purchase again.
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Rating
106 reviews
- HLHOMETIGO L.Verified BuyerReviewingSquare D QOU260 - 60A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/7/26Good thing
i recommend this for you
- RGRobert G.Verified BuyerReviewingSquare D QOU340 - 40A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/3/26Circuit breakers
I appreciate the fact that you had these in stock. my Square D distributor does not seem to stock these anymore and it takes a couple weeks to get. your pricing is inline with theirs.
- THTiffany H.Verified BuyerReviewingSquare D QOU115 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/28/26Will use Super Breakers again
Arrived in a timely manner. Exactly what we needed for a job.
- CSCary S.Verified BuyerReviewingSquare D QOU250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/12/26Just what I ordered
Just what I needed for dock pedestal
- MHMark H.Verified BuyerReviewingSquare D QOU250VH - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/11/26Square D QOU250VH - 50A 2 Pole Miniature Circuit Breaker
Was just what I expected!