ABB XT4HU3250AYL000XXX Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
ABB
XT4HU3250AYL000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4HU3250AYL000XXX
Quantity
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ABB XT4HU3250AYL000XXX - 250A 3 Pole Molded Case Circuit Breaker
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Description
Part of the SACE Tmax XT series, this 250-amp molded case circuit breaker provides reliable fixed thermal and magnetic protection for demanding commercial and industrial applications. It mounts into ABB ReliaGear neXT panelboards and switchboards, serving as a modern replacement for legacy T4H250 units. Featuring a high interrupting capacity of 65kA at 480VAC, the XT4HU3250AYL000XXX includes factory-installed lugs and current-limiting capabilities to minimize fault energy.Specifications
| Brand | ABB |
|---|---|
| Series | XT4 |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 600VDC |
| Phase | 3 |
| AIC Rating | 150kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 50kA @ 250VDC, 65kA @ 600VDC |
| Frame Type | XT4N |
|---|---|
| Terminal Type | Lugs |
| For Use With | ReliaGear neXT Panelboards, Switchboards, SACE Tmax XT Panelboards |
| Wire Gauge | 3/0 AWG - 350 kcmil (Cu/Al) |
| Max Wire | 350 kcmil |
| Min Wire | 3/0 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, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CCC, CSA, IEC, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed |
Product FAQs
6 answersWhich panelboards are compatible with the XT4HU3250AYL000XXX breaker?
This unit mounts directly into ABB and GE ReliaGear neXT panelboards, switchboards, and SACE Tmax XT panelboards. It requires the appropriate mounting hardware or breaker kit specific to the panelboard type.
What wire sizes are accepted by the lugs on this 250A XT4 breaker?
The factory installed lugs accept copper or aluminum conductors ranging from 3/0 AWG to 350 kcmil. Ensure you apply the correct torque specifications listed on the breaker faceplate during installation to prevent thermal issues.
Can this 3-pole XT4 breaker be used in DC circuits?
Yes, it is rated for DC applications up to 600VDC with an interrupting capacity of 65kA, and 250VDC at 50kA. When wiring for DC systems, follow ABB guidelines for series wiring of poles to achieve the required voltage rating.
Is the thermal magnetic trip unit on this breaker adjustable?
No, this specific model features a fixed thermal and fixed magnetic (LI) trip unit. Both the long-time overload protection and instantaneous short-circuit protection are factory set and cannot be modified in the field.
Does this ABB Tmax XT breaker replace older GE Spectra series breakers?
The SACE Tmax XT series, including the XT4 frame, is the direct replacement for legacy GE Spectra RMS breakers in many applications. However, retrofitting into older GE enclosures may require specific adapter kits or hardware.
Does this breaker snap into place or require bolt-on mounting?
This is a unit mount breaker, meaning it bolts directly to the chassis or mounting plate rather than snapping onto a busbar. It is designed for secure, fixed installations in switchboards and compatible panelboards.
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