Square D Q2M2125 Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Quantity
Square D Q2M2125 - 125A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for commercial and industrial power distribution, the Square D Q2M2125 is a 2-pole, 125A molded case circuit breaker. It provides thermal-magnetic protection with a 10kAIC rating at 120/240VAC. This bolt-on unit is designed to fit Square D Meter-Pak, EZM metering centers, and NQOD panelboards. It serves as a replacement for older systems and is replaced by the QBM22125TN. Featuring a non-interchangeable trip unit, it includes line side studs and load side lugs for secure connections.Specifications
| Brand | Square D |
|---|---|
| Series | Q2M |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | Q2M |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Meter-Pak, EZM Metering, NQOD Panelboards |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, Main Breaker |
Product FAQs
6 answersWhat type of equipment typically uses the Q2M2125 breaker?
This legacy Q-frame breaker is commonly installed as a tenant main breaker in Square D EZM Metering centers and Meter-Pak enclosures, as well as serving as a branch or main breaker in NQOD panelboards.
Is the Q2M2125 still actively manufactured?
The Q2M frame is a legacy product line from Square D. While original units are still sourced for direct replacements in existing panels, Schneider Electric has transitioned to newer frame types for modern installations.
Do I need to purchase lugs separately for the Q2M2125?
No, this breaker comes standard with load side lugs installed. These terminals are rated to accept either aluminum or copper conductors ranging from 4 AWG up to 300 kcmil.
Can I adjust the trip settings on the Q2M2125?
No, this breaker features a fixed thermal magnetic trip unit. Both the long time overload protection and the instantaneous short circuit protection are factory set and cannot be adjusted in the field.
Can this breaker be used in a standard QO load center?
No, the Q2M2125 is a bolt-on molded case circuit breaker designed specifically for commercial NQOD panelboards and EZM metering equipment. It will not fit into a residential plug-on QO load center.
Are there adapter kits available to replace a Q2M tenant breaker with a QO breaker?
Yes, if you are working with EZ Meter-Pak equipment, Square D offers the EZM125QOA adapter kit. This hardware allows a standard two pole QO breaker to be used in place of a 40A to 125A bolt-on Q2M tenant circuit breaker.
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