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Square D QBM22125TN Molded Case Circuit Breaker
- 125A
- 2 Pole
- Unit Mount
Square D
QBM22125TN
Molded Case Circuit Breaker
Brand
Square D
SKU
QBM22125TN
Quantity
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Square D QBM22125TN - 125A 2 Pole Molded Case Circuit Breaker
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Quantity
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Description
Built for robust power distribution, the Square D QBM22125TN is a 125A, 2-pole molded case circuit breaker offering 10kAIC interrupt capacity at 240VAC. As a unit-mount MCCB, it easily integrates into NQ or NQOD panelboards. It is also fully compatible as a substitute for the older Q2M2125MT model in existing electrical systems. Part of the PowerPacT Q-Frame lineup, it utilizes fixed thermal-magnetic trip technology and includes factory-installed studs on the load end for secure connections.Specifications
| Brand | Square D |
|---|---|
| Part Number | QBM22125TN |
| Series | QBM |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 208Y/120VAC, 10kA @ 240VAC |
| Frame Type | QBM |
|---|---|
| Terminal Type | Stud/Tapped Pad |
| For Use With | NQ Panelboards, NQOD Panelboards, Switchboards |
| 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Factory-installed Studs on Load Side (TN Suffix) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip, Main Breaker |
Product FAQs
4 answersWhich panelboards are compatible with the QBM22125TN?
This breaker is designed for use in Square D NQ and NQOD panelboards, as well as compatible switchboards.
What older circuit breaker does the QBM22125TN replace?
The QBM22125TN serves as a direct substitute for the older Square D Q2M2125MT circuit breaker in existing electrical systems.
What does the TN suffix indicate on the QBM22125TN?
The TN suffix specifies that the breaker includes factory-installed studs on the load side for secure ring terminal or bus connections, rather than standard mechanical lugs.
How is the QBM22125TN installed into a panelboard?
This is a unit-mount breaker that utilizes a bolt-on connection for secure installation, rather than a plug-on or I-Line configuration.
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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.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- MPMichael P.Verified BuyerReviewingSquare D QBM32200TN - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/14/26Owner…..Payne Electric
Got exactly what I ordered.
- TMTony M.Verified BuyerRated 5 out of 5 stars12/12/25Square D circuit breakers
As always, I order circuit breakers from super breakers and I receive my order the very next day. Great service, very dependable. !
Also there prices are great .
Tony