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ABB XT1SU3125AYD000XXX Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
ABB
XT1SU3125AYD000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT1SU3125AYD000XXX
Quantity
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ABB XT1SU3125AYD000XXX - 125A 3 Pole Molded Case Circuit Breaker
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Description
Designed for commercial systems, the ABB XT1SU3125AYD000XXX is a 125A, 3-pole molded case circuit breaker in the SACE Tmax XT1 frame. It provides dependable long-time and instantaneous (LI) protection using fixed thermal-magnetic trip units. This unit mount MCCB integrates into ABB ReliaGear neXT panelboards and ReliaGear SB switchboards. It serves as an exact upgrade for older Tmax T1 breakers. Rated 35kAIC at 480VAC, it features a current-limiting design with line and load lugs.Specifications
| Brand | ABB |
|---|---|
| Series | XT1 |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600Y/347VAC, 42kA @ 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, 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 | CE, CSA, cULus, IEC, RoHS, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed, Double Insulated |
Product FAQs
5 answersWhat equipment is the XT1SU3125AYD000XXX designed to be installed in?
This unit mount breaker is compatible with ABB ReliaGear neXT panelboards and ReliaGear SB switchboards. When installing into these systems, ensure you have the correct line-side connectors or mounting hardware for your specific panel configuration.
What wire gauge range do the factory lugs on the XT1SU3125AYD000XXX accept?
The standard lugs accommodate copper or aluminum wire sizes from 10 AWG up to 2/0 AWG. Always verify proper torque specifications in the ABB instruction manual before energizing the circuit.
Is the XT1SU3125AYD000XXX suitable for direct current (DC) applications?
Yes, this thermal magnetic breaker is rated for DC applications up to 250VDC with a 42kA interrupting capacity. When deploying in DC circuits, refer to ABB guidelines for proper pole wiring configurations.
Can the trip curve be adjusted on this 125A breaker?
No, this model features a fixed thermal and fixed magnetic trip unit for long-time and instantaneous (LI) protection. For adjustable trip settings, a Tmax XT breaker equipped with an Ekip electronic trip unit is required.
Can I use this Tmax XT1 breaker to replace an obsolete GE Spectra RMS breaker?
The ABB SACE Tmax XT series is the official replacement path for legacy GE Spectra RMS and Record Plus breakers. Because physical dimensions and mounting configurations differ, a retrofit kit is typically required to install this breaker in an older GE panelboard.
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