Square D QOU120VH Miniature Circuit Breaker
- 20A
- 1 Pole
- Unit Mount
Square D
QOU120VH
Miniature Circuit Breaker
Brand
Square D
SKU
QOU120VH
Quantity
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Square D QOU120VH - 20A 1 Pole Miniature Circuit Breaker
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20A 1 Pole Miniature Circuit Breaker
20A 1 Pole Miniature Circuit Breaker
20A 1 Pole Miniature Circuit Breaker
Description
Part of the QOU series, this 20A single-pole breaker is engineered for applications requiring enhanced fault protection. It provides dependable thermal-magnetic overcurrent defense for branch circuits and heating equipment. Designed for maximum installation flexibility, the breaker supports unit, surface, or DIN rail mounting configurations. It integrates smoothly into OEM panels and custom control enclosures. Featuring a 22 kAIC rating, it includes reversible lugs and a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Series | QOU |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Unit Mount |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QOU |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | DIN Rail Systems, OEM Panels, Enclosures, Control Panels |
| 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, Terminal Shields |
|---|---|
| Accessories | Visi-Trip Indicator |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, High Interrupting Capacity, Visual Trip Indicator, Reverse Feed |
Product FAQs
6 answersWhat does the VH stand for in the QOU120VH catalog number?
The VH indicates a very high interrupting rating. While standard QOU breakers are rated at 10 kAIC, the QOU120VH is rated to safely interrupt up to 22 kAIC at 120/240VAC.
How is the QOU120VH circuit breaker mounted?
This is a unit-mount breaker that can be surface mounted, flush mounted, or installed on a standard 35mm DIN rail using a compatible mounting foot such as the QOUMF1.
Can I install the QOU120VH in a standard Square D QO load center?
No. QOU breakers are unit-mount devices designed for OEM panels, control enclosures, and DIN rail systems. They do not have the plug-on clips required for standard QO load centers.
Is the QOU120VH suitable for reverse feeding?
Yes. Square D QOU miniature circuit breakers are suitable for reverse feeding, allowing you to connect the supply power to either the top or bottom terminals.
Is the QOU120VH HACR rated?
Yes. This breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires this specific overcurrent protection standard.
What is the difference between the QO120VH and the QOU120VH?
Although both are 20A, 1-pole breakers with a 22 kAIC rating, the QO120VH is a plug-on breaker for QO load centers. The QOU120VH is a unit-mount breaker used in control panels and DIN rail applications.
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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!