Square D QOU2201021 Miniature Circuit Breaker
- 20A
- 2 Pole
- Unit Mount
Square D
QOU2201021
Miniature Circuit Breaker
Brand
Square D
SKU
QOU2201021
Quantity
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Square D QOU2201021 - 20A 2 Pole Miniature Circuit Breaker
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Description
Part of the QO family, this specialized 2-pole miniature circuit breaker integrates a 120/240VAC shunt trip for remote disconnect applications. The 20A unit-mount breaker is engineered to fit standard DIN rail systems or surface-mounted configurations in commercial and industrial control panels. Delivering a 10 kAIC interrupting rating at 120/240V, it features reversible feed lugs, common trip functionality, and a visual trip indicator to streamline maintenance and system safety.Specifications
| Brand | Square D |
|---|---|
| Series | QOU |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 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 Thermal, Fixed Magnetic |
| Available Options | Mounting Feet, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Reversible Feed, Common Trip |
Product FAQs
5 answersWhat does the 1021 suffix indicate on the QOU2201021 breaker?
The 1021 suffix designates a factory-installed 120/240VAC shunt trip. This accessory allows the breaker to be tripped remotely, which is commonly required for emergency stop circuits or remote control panels.
How is the QOU2201021 circuit breaker mounted?
This unit-mount breaker features a cable-in, cable-out design. It can be installed on standard DIN rail systems, surface mounted, or flush mounted using compatible mounting feet, making it highly adaptable for OEM and control panels.
Does the QOU2201021 include a visual trip indicator?
Yes, this breaker includes the Square D Visi-Trip feature. When the breaker trips due to an overcurrent or short circuit condition, a red indicator appears to help quickly identify the tripped circuit.
What is the difference between the QOU220 and the QOU2201021?
The standard QOU220 is a basic 2-pole, 20A miniature circuit breaker. The QOU2201021 includes the same thermal-magnetic protection but adds a factory-installed 120/240VAC shunt trip for remote tripping capabilities.
Does this breaker require a specific panelboard bus connection?
No. Unlike plug-on or bolt-on panelboard breakers, the QOU2201021 is a unit-mount breaker with a cable-in, cable-out configuration. It wires directly via its box lugs rather than connecting to a panelboard bus.
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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!