ABB A2N125TW Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Quantity
ABB A2N125TW - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for industrial applications, the A2N125TW is a 3-pole, 125A MCCB from ABB's Formula A2 series. It utilizes a fixed thermal-magnetic trip unit to provide dependable long-time and instantaneous (LI) overcurrent protection. This unit-mount breaker fits ABB ReliaGear RQ and Formula panelboards. It also replaces legacy GE THQD32125 breakers, though retrofitting may be required for older panels. With a 25kAIC rating at 240VAC, this HACR-rated breaker allows for flexible installation.Specifications
| Brand | ABB |
|---|---|
| Series | Formula |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 25kA @ 250VDC |
| Frame Type | A2A |
|---|---|
| Terminal Type | Lugs |
| For Use With | ABB ReliaGear RQ Panelboards, ABB Formula Panelboards, DIN Rail Enclosures |
| 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, Lug Kits, DIN Rail Adapter, Rotary Handle |
|---|---|
| Accessories | Lugs Not Included, 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
7 answersWhat panelboards are compatible with the ABB A2N125TW?
This breaker is designed for use in ABB ReliaGear RQ panelboards and ABB Formula panelboards. It can also be installed in standard DIN rail enclosures.
Can the A2N125TW replace older General Electric breakers?
Yes, this Formula A2 series breaker serves as a replacement for legacy GE THQD32125 circuit breakers. Note that retrofitting may be required when installing it into older GE panels.
What are the physical dimensions of this Formula A2 frame breaker?
The A2N125TW measures approximately 5.91 inches high, 4.13 inches wide, and 2.36 inches deep.
Are the thermal and magnetic trip settings adjustable?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time thermal and instantaneous magnetic protection thresholds are factory set and cannot be adjusted in the field.
What is the maximum amperage rating for the Formula A2 frame?
While the A2N125TW is configured for 125A, the underlying Formula A2 frame supports a maximum rating of 250 amps.
What is the operating temperature range for this circuit breaker?
The A2N125TW is rated for an ambient operating temperature range of -13 to 158 degrees Fahrenheit.
Does this breaker support DIN rail mounting?
Yes, in addition to standard chassis and rear mounting configurations, the A2N125TW can be installed in DIN rail enclosures.
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