Square D QOU315-1200 QOU3151200 - 15A 3 Pole Miniature Circuit Breaker
- 15A
- 3 Pole
- Unit Mount
Square D
QOU315-1200
QOU3151200 - 15A 3 Pole Miniature Circuit Breaker
Brand
Square D
SKU
QOU315-1200
Quantity
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Square D QOU3151200 - 15A 3 Pole Miniature Circuit Breaker
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Description
Part of the QOU series, the Square D QOU315-1200 offers dependable thermal-magnetic protection for commercial facilities. This 15-amp, three-pole breaker handles 240VAC and 48VDC circuits. The unit-mount configuration installs easily into DIN rail systems, control panels, and OEM enclosures. Reversible lugs accommodate versatile wiring setups. A factory-installed auxiliary switch provides remote status monitoring. It also includes a Visi-Trip indicator to quickly spot tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOU315-1200 |
| Series | QOU |
| Amperage | 15A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 5kA @ 48VDC |
| Frame Type | QOU |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | OEM Panels, Control Panels, DIN Rail Systems, Enclosures |
| Wire Gauge | 14-2 AWG |
| 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 | Auxiliary Switch (Factory Installed) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489, HACR Rated |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
Product FAQs
8 answersWhat does the -1200 suffix indicate on this Square D breaker?
The -1200 suffix means the breaker comes with a factory-installed auxiliary switch. It features a "B" contact that remains closed when the breaker is off or tripped, which is useful for remote status signaling.
Can I mount the QOU315-1200 on a DIN rail?
Yes, QOU series breakers like the QOU315-1200 can be DIN rail mounted, flush mounted, or surface mounted. They are commonly used in control panels and OEM enclosures.
What wire sizes are accepted by the terminals on the QOU315-1200?
The slotted box lugs on both the line and load sides accept copper or aluminum wire ranging from 14 AWG to 2 AWG.
Does this breaker require a specific load center for installation?
No. Unlike plug-on or bolt-on breakers that require specific panelboards, the QOU315-1200 is a unit mount (feed-thru) breaker. It has lugs on both ends and mounts directly to a flat surface or DIN rail, making it ideal for custom control panels.
What type of trip mechanism does the QOU315-1200 use?
It utilizes a fixed thermal-magnetic trip mechanism. The thermal element provides long-time protection against mild overloads, while the magnetic element offers instantaneous protection against severe short circuits.
Is the QOU315-1200 HACR rated?
Yes, standard Square D QOU miniature circuit breakers are HACR rated, meaning they are approved for use with heating, air conditioning, and refrigeration equipment multi-motor loads.
Does the QOU315-1200 feature a Visi-Trip indicator?
Yes, like other QO and QOU series breakers, it includes a red Visi-Trip indicator that becomes visible when the breaker has tripped, allowing for quick identification of a faulted circuit.
Is the QOU315-1200 the same as the QOU315?
The QOU315-1200 is built on the standard QOU315 15A 3-pole breaker platform, but it includes the factory-installed -1200 auxiliary switch. If you do not need the auxiliary switch for remote signaling, the standard QOU315 can be used.
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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!