ABB A2A125TW Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
ABB
A2A125TW
Molded Case Circuit Breaker
Brand
ABB
SKU
A2A125TW
Quantity
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ABB A2A125TW - 125A 3 Pole Molded Case Circuit Breaker
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Quantity
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Description
Engineered for commercial applications, the ABB A2A125TW 3-pole, 125A molded case circuit breaker belongs to the Formula A2 series. It provides reliable long-time and instantaneous protection. This unit mount breaker installs into ABB Formula and ReliaGear panelboards, OEM enclosures, and DIN rails. It serves as a functional replacement for legacy TQD32125 breakers. Rated 10kAIC at 240VAC, this HACR-rated MCCB features fixed thermal-magnetic trip and reverse feedability.Specifications
| Brand | ABB |
|---|---|
| Series | Formula |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 10kA @ 250VDC |
| Frame Type | A2A |
|---|---|
| Terminal Type | Lugs |
| For Use With | ABB Formula Panelboards, ReliaGear Panelboards, OEM Enclosures, DIN Rail |
| 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, Terminal Shields, Lug Kits |
|---|---|
| Accessories | Front Terminals Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL, cULus |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
5 answersCan the ABB A2A125TW replace legacy GE circuit breakers?
Yes, this breaker serves as a functional replacement for discontinued General Electric TQD32125 circuit breakers. It integrates into legacy enclosures and ReliaGear panels, providing a modern upgrade for older 3-pole 125A installations.
What enclosures and panelboards accept the A2A125TW?
This unit mount breaker is compatible with ABB Formula panelboards and ReliaGear panelboards. It can also be installed in standard OEM enclosures or mounted to a DIN rail for control panel applications.
Can I adjust the trip thresholds on the A2A125TW?
No, this breaker is equipped with a fixed thermal-magnetic (TMF) trip unit. The long-time thermal overload and instantaneous magnetic short-circuit thresholds are factory-calibrated for 125 amps and are not field-adjustable.
What internal accessories are compatible with the Formula A2 frame?
The A2A125TW supports several field-installable internal accessories, including shunt trips, undervoltage releases, and auxiliary contacts. These accessories mount directly inside the breaker housing for remote tripping and status signaling.
Are the included lugs rated for aluminum wire?
Yes, the factory-installed mechanical lugs on this breaker are dual-rated for both copper and aluminum (Cu/Al) conductors.
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