Square D QOU3501200 Miniature Circuit Breaker
- 50A
- 3 Pole
- Unit Mount
Square D
QOU3501200
Miniature Circuit Breaker
Brand
Square D
SKU
QOU3501200
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D QOU3501200 - 50A 3 Pole Miniature Circuit Breaker
New
Quantity
Similar Items
50A 3 Pole Miniature Circuit Breaker
45A 3 Pole Miniature Circuit Breaker
40A 3 Pole Miniature Circuit Breaker
Description
Part of the QOU series, this 50-amp miniature circuit breaker delivers reliable power distribution for residential, commercial, and industrial facilities. The three-pole device is engineered to handle standard overcurrent and short-circuit events. Designed for maximum flexibility, it installs into DIN rail systems, OEM equipment, and custom control panels via a unit-mount setup. This model features a factory-installed auxiliary switch for remote status monitoring and a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Series | QOU |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 120/240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 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 | Padlock Attachment, Mounting Feet, Shunt Trip, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included, Mounting Hardware, 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
7 answersWhat does the 1200 suffix indicate on the QOU3501200 catalog number?
The 1200 suffix indicates that this breaker includes a factory-installed auxiliary switch, which provides remote status monitoring of the breaker position.
How is the QOU3501200 mounted in control panels?
This is a unit-mount breaker that can be installed on standard 35mm DIN rail systems, or it can be flush or surface mounted in OEM equipment and enclosures.
What type of terminals does the QOU3501200 use?
It features reversible box lugs that accept 14 AWG to 2 AWG copper or aluminum wire, allowing for convenient flush or surface mount wiring.
Can the QOU3501200 be used in DC control circuits?
Yes, this breaker is rated for 48VDC applications and provides a 5 kA interrupting capacity for direct current systems.
Does this breaker include a visual trip indicator?
Yes, it features the Square D Visi-Trip indicator, which provides immediate visual confirmation when the breaker has tripped due to an overcurrent or short circuit event.
Are the line and load connections reversible on the QOU3501200?
Yes, QOU miniature circuit breakers are UL Listed for reverse connection and can be wired with power coming into either the top or bottom lugs.
Is this breaker rated for HVAC applications?
Yes, it is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
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.
Search
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!