ABB / General Electric TMQB21125 Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Quantity
ABB / General Electric TMQB21125 - 125A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the Q-Line family, the GE TMQB21125 is a 125A main circuit breaker designed for multi-tenant environments. It utilizes proven thermal-magnetic trip technology to protect against overloads and short circuits in residential or commercial buildings. This bolt-on MCCB mounts seamlessly into GE Meter Mod III modular metering stacks. Rated at 42kAIC at 120/240VAC, it safely clears high-level faults while offering HACR certification for heating and cooling circuits.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | TMQB |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 42kA @ 120/240VAC |
| Frame Type | TMQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE Meter Mod III Modular Metering Stacks |
| Wire Gauge | 2-2/0 AWG (Cu/Al) |
| Max Wire | 2/0 AWG |
| Min Wire | 2 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Tenant Main, High Interrupting Capacity |
Product FAQs
4 answersWhat applications are best suited for the TMQB21125 circuit breaker?
This breaker is engineered primarily for tenant main applications in multi-family and commercial environments. It bolts directly into GE Meter Mod III modular metering stacks to provide reliable overcurrent protection.
What are the wire size requirements for the TMQB21125?
The included box lugs accept copper or aluminum wiring ranging from 2 AWG to 2/0 AWG. Always verify local codes and apply the correct torque during installation.
Does the TMQB21125 carry an HACR rating?
Yes, this breaker is HACR rated, making it fully approved to protect heating, air conditioning, and refrigeration equipment circuits.
Is the TMQB21125 a suitable replacement for older tenant main breakers?
Yes, it serves as a direct replacement for older 125A, 2-pole tenant main breakers in GE Meter Mod III metering stacks, provided the system requires a 42kAIC interrupting capacity.
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