Engineered for specialized control requirements, the Square D QOU260-1021 features a built-in 120/208/240VAC shunt trip mechanism. This 60-amp, two-pole miniature circuit breaker allows for remote disconnection, making it ideal for emergency stop circuits and automated systems. It mounts securely onto DIN rails or within custom OEM enclosures using a standard unit-mount configuration. Rated for 10 kAIC at 120/240VAC, it delivers reliable protection alongside its remote trip functionality.
What does the -1021 suffix mean on this Square D breaker?
The -1021 suffix indicates that the breaker includes a factory-installed shunt trip rated for 120V, 208V, or 240V AC. This allows the circuit to be opened remotely using a control signal.
How much panel space does the QOU260-1021 require?
This breaker requires three pole spaces, totaling 2.25 inches in width. The 60A breaker utilizes two poles, and the factory-installed shunt trip requires one additional pole space.
Can I field-install a shunt trip on a standard QOU260 breaker?
No. Square D QOU shunt trips must be factory-installed. If your application requires remote tripping capabilities, you must purchase a breaker with the shunt trip already integrated, such as the QOU260-1021.
How do I wire the shunt trip module on the QOU260-1021?
The shunt trip terminals accept up to two 14 AWG to 12 AWG copper wires. The hot and neutral control wires are not polarity sensitive and can be connected to either terminal on the shunt trip module.
How is the QOU260-1021 mounted in an enclosure?
As a unit-mount breaker, it does not plug onto a busbar. It can be surface-mounted, flush-mounted, or attached to a standard DIN rail using compatible Square D mounting foot adapters.
What applications are QOU breakers typically used for?
QOU unit-mount circuit breakers are cable-in and cable-out devices ideal for OEM applications, control panels, and custom enclosures where a traditional load center busbar is not available.
Does this breaker include a tripped circuit indicator?
Yes, this model features the Square D Visi-Trip indicator. When the breaker trips due to an overcurrent or short circuit, a highly visible red indicator appears to help you quickly identify the faulted circuit.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 106 reviews.
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Rated 5.0 out of 5 stars
Based on 106 reviews
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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.
Square D QOU260 - 60A 2 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/7/26
Good thing
i recommend this for you
RG
Robert G.
Verified Buyer
Reviewing
Square D QOU340 - 40A 3 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/3/26
Circuit 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.
TH
Tiffany H.
Verified Buyer
Reviewing
Square D QOU115 - 15A 1 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/28/26
Will use Super Breakers again
Arrived in a timely manner. Exactly what we needed for a job.
CS
Cary S.
Verified Buyer
Reviewing
Square D QOU250 - 50A 2 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/12/26
Just what I ordered
Just what I needed for dock pedestal
MH
Mark H.
Verified Buyer
Reviewing
Square D QOU250VH - 50A 2 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/11/26
Square D QOU250VH - 50A 2 Pole Miniature Circuit Breaker