Square D QOU230-1021 QOU2301021 - 30A 2 Pole Miniature Circuit Breaker
- 30A
- 2 Pole
- Unit Mount
Quantity
Square D QOU2301021 - 30A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Engineered for versatile installation, the Square D QOU230-1021 delivers 30 amps of thermal-magnetic protection. This two-pole miniature breaker is designed for OEM panels, control enclosures, and DIN rail systems across various environments. The unit-mount design allows flexible integration without a traditional busbar, utilizing box lugs for 14-2 AWG wiring. A key advantage is the integrated shunt trip mechanism for remote tripping, alongside an HACR rating and Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOU230-1021 |
| Series | QOU |
| Amperage | 30A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| 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 |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
Product FAQs
7 answersWhat does the 1021 suffix indicate on the QOU230-1021 circuit breaker?
The 1021 suffix indicates that this breaker includes a factory-installed shunt trip designed for 120V, 208V, or 240V AC control signals. This allows the breaker to be opened remotely.
Does the factory-installed shunt trip affect the physical footprint of the QOU230-1021?
Yes. The shunt trip adds one additional pole space to the overall width. While it provides 2-pole overcurrent protection, the unit requires 3 pole spaces, making it 2.25 inches wide.
What wire sizes are accepted by the shunt trip terminals on this breaker?
The shunt trip terminals accept two 14-12 AWG copper wires. Note that the main breaker box lugs accept 14-2 AWG aluminum or copper wire.
Can a shunt trip be field-installed on a standard QOU230 breaker?
No. Square D shunt trips for the QOU series must be factory-installed. You must order a breaker with the appropriate factory suffix, such as the QOU230-1021, if remote tripping is required.
How is the QOU230-1021 miniature circuit breaker mounted?
QOU series breakers are unit-mountable. They can be surface-mounted, flush-mounted, or installed on standard DIN rails, making them ideal for OEM equipment, control panels, and custom enclosures.
Is the QOU230-1021 rated for direct current (DC) systems?
Yes, this breaker is UL Listed for DC applications up to 48V DC, providing a maximum interrupting capacity of 5 kA at that voltage.
How does the Visi-Trip feature work on the QOU230-1021?
When the breaker trips due to an overcurrent or a shunt trip signal, the handle moves to a center position and a bright red Visi-Trip indicator appears in the breaker window for quick visual identification.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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!