Square D QOM2125VH1021 Miniature Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Quantity
Square D QOM2125VH1021 - 125A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Designed for commercial and industrial applications requiring remote shutdown capabilities, the Square D QOM2125VH1021 is a 125A, 2-pole main breaker. It features a factory-installed shunt trip mechanism operating at 120/208/240VAC, allowing the breaker to be tripped from a remote location. This QOM2 frame unit bolts securely into compatible QO load centers. With a 22kAIC interrupt rating and Visi-Trip visual indicator, it combines high-capacity protection with simplified diagnostics.Specifications
| Brand | Square D |
|---|---|
| Series | QOM |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | QO |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | QO Load Centers |
| Wire Gauge | 4 AWG - 300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Shunt Trip (120/208/240VAC) |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Main Breaker, High Interrupting Capacity |
Product FAQs
5 answersWhich load centers are compatible with the QOM2125VH1021 main breaker?
This breaker fits Square D QO and Homeline load centers designed to accept QOM2 frame main breakers. It is not compatible with panels that require the smaller QOM1 frame size.
What does the 1021 suffix indicate on the QOM2125VH1021 catalog number?
The 1021 suffix designates that this breaker includes a factory-installed 120V to 240V AC shunt trip accessory.
How does the integrated shunt trip function on this breaker?
The factory-installed shunt trip allows the breaker to be tripped remotely. When a control voltage between 120V and 240V AC is applied to the shunt trip coil, it mechanically opens the breaker contacts to disconnect power.
Can I use this QOM2 frame breaker to replace a 125A QOM1 main breaker?
No. Even though both may be rated for 125 amps, QOM1 and QOM2 frame breakers have different physical dimensions and mounting footprints. You must use the specific frame size required by your load center.
How is the QOM2125VH1021 installed in the load center?
This is a bolt-on main breaker. It secures directly to the interior busbar of compatible QO or Homeline load centers using mounting screws, providing a secure connection for primary power distribution.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 7 reviews.
- CHCharles H.Verified BuyerReviewingSquare D QOM100VH - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/28/25Sq D always makes sense
It fit perfectly in a panel that has a DC at the meter. Now I can wire my Gen circuits.
- MKMONA K.Verified BuyerReviewingSquare D QOM100VH - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/30/25Perfect fit
Perfect fit,quick service! An exact replacement for a 100 amp main breaker. Full power back. AC working again.
- SHSabine H.ReviewingSquare D QOM2150MM - 150A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/22Service
Service
- DRDerrick R.ReviewingSquare D QOM2100VH - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars12/29/21AWESOME SERVICE AND AVAILABILITY
AWESOME SERVICE. ORDERED AND GOT MY DELIVERY IN ONE DAY! WILL CONTINUE TO USE YOU GUYS IN THE FUTURE!!
- SASamuel A.ReviewingSquare D QOM2200VH - 200A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/6/21Works great as designed
Needed this specific breaker for a drop-in replacement and this was it. I wasn’t disappointed. Superbreakers had it when others didn’t.