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Square D QOU135 Miniature Circuit Breaker
- 35A
- 1 Pole
- Unit Mount
Square D
QOU135
Miniature Circuit Breaker
Brand
Square D
SKU
QOU135
Quantity
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Square D QOU135 - 35A 1 Pole Miniature Circuit Breaker
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Description
Built for industrial applications, the Square D QOU135 is a 35A, 1-pole miniature circuit breaker providing robust protection for 120/240VAC and 48VDC systems. This unit-mount breaker is highly adaptable, fitting seamlessly into OEM panels, control enclosures, and DIN rail systems. Its versatile design allows for surface or flush mounting. Equipped with a 10 kAIC rating, it includes Visi-Trip technology for visual trip confirmation and reversible box lugs to enable reverse feeding capabilities.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOU135 |
| Series | QOU |
| Amperage | 35A |
| Poles | 1 |
| 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 | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Reverse Feed |
Product FAQs
7 answersCan the Square D QOU135 be mounted on a standard DIN rail?
Yes, while the QOU135 is a unit mount circuit breaker, it can be installed on a standard 35mm DIN rail using a compatible Square D QOU mounting bracket. It can also be surface or flush mounted in OEM panels and enclosures.
Is the QOU135 circuit breaker HACR rated?
Yes, the Square D QOU135 is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment that requires this specific overcurrent protection rating.
What is the recommended tightening torque for the box lugs on the QOU135?
The slotted box lugs on the QOU135 require a tightening torque of 45 lb-in for the supported 14 to 2 AWG aluminum or copper wire range.
Are the line and load terminals on the QOU135 reversible?
Yes, the QOU series features reversible line and load slotted box lugs. This allows for flexible wiring configurations during flush or surface mount installations.
Does the Square D QOU135 feature a visual trip indicator?
Yes, this breaker includes the Square D Visi-Trip indicator. When the breaker trips due to an overcurrent or short circuit condition, a highly visible red flag appears to help quickly identify the faulted circuit.
Can I add a field-installable shunt trip to the QOU135?
Shunt trips and other internal accessories for QOU breakers are typically factory installed. You will need to order a specific catalog number with the appropriate accessory suffix rather than adding a shunt trip to a standard QOU135 in the field.
Does the QOU135 have adjustable trip settings?
No, the QOU135 features fixed thermal and fixed magnetic trip settings for its long-time and instantaneous trip functions.
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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!