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ABB XT1NU3125AFD000XXX Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
ABB
XT1NU3125AFD000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT1NU3125AFD000XXX
Quantity
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ABB XT1NU3125AFD000XXX - 125A 3 Pole Molded Case Circuit Breaker
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Description
Mounts into ReliaGear neXT panelboards, the XT1NU3125AFD000XXX is a 3-pole molded case circuit breaker from ABB's SACE Tmax XT family. Engineered for commercial power distribution, this 125A breaker features a fixed thermal magnetic trip unit (LI) and includes FC CuAl 10-2/0 AWG lugs. Rated at 25kAIC at 480VAC, it serves as a direct replacement for legacy Tmax T1 series breakers while offering current limiting and reverse feed capabilities.Specifications
| Brand | ABB |
|---|---|
| Series | XT1 |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 50kA @ 240VAC, 25kA @ 480Y/277VAC, 25kA @ 480VAC, 18kA @ 600Y/347VAC, 35kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | ABB ReliaGear neXT Panelboards, ReliaGear SB Switchboards |
| Wire Gauge | 10 AWG - 2/0 AWG |
| Max Wire | 2/0 AWG |
| Min Wire | 10 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Shunt Trip, Undervoltage Release, Padlock Attachment, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Lugs (Kit FC CuAl 10-2/0 AWG) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489 |
| Approval | CCC, CE, CSA, cULus, IEC, KEMA, RINA, RoHS, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Double Insulated, Reverse Feed |
Product FAQs
5 answersWhich panelboards are compatible with the XT1NU3125AFD000XXX circuit breaker?
This breaker mounts into ABB ReliaGear neXT Panelboards and ReliaGear SB Switchboards.
What does the N in the XT1NU3125AFD000XXX part number indicate?
The N designates ABB's Normal interrupting capacity tier for the Tmax XT series, providing up to 25kA at 480VAC and 50kA at 240VAC.
What wire sizes are accepted by the standard lugs on this breaker?
The factory-installed lugs accept copper or aluminum conductors ranging from 10 AWG to 2/0 AWG.
Can the trip settings be adjusted on the XT1NU3125AFD000XXX?
No. This breaker features a fixed thermal and fixed magnetic trip unit, meaning the Long-Time and Instantaneous protection thresholds cannot be modified in the field.
What frame size does the XT1NU3125AFD000XXX belong to?
It is part of the ABB SACE Tmax XT1 frame family, which is a compact molded case circuit breaker frame designed for up to 125 amps.
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