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ABB XT4HU3250AY8000XXX Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
ABB
XT4HU3250AY8000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4HU3250AY8000XXX
Quantity
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ABB XT4HU3250AY8000XXX - 250A 3 Pole Molded Case Circuit Breaker
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Description
Handling larger wire sizes from 3/0 AWG to 350 kcmil, the ABB XT4HU3250AY8000XXX offers heavy-duty circuit protection. Operating as a 250-amp, 3-pole molded case circuit breaker, it supports demanding commercial environments. It installs into ReliaGear neXT and SACE Tmax XT panelboards, easily replacing legacy T4H250 models. Equipped with a fixed thermal-magnetic trip unit and rated for 65 kAIC at 480VAC, it ensures reliable, current-limiting performance with reverse feed capabilities.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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | ReliaGear neXT Panelboards, Switchboards, SACE Tmax XT Panelboards |
| Wire Gauge | 3/0 AWG - 350 kcmil |
| 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 Not Included, Front Terminals Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CCC, CE, CSA, cULus, IEC, KEMA, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed |
Product FAQs
6 answersWhich panelboards are compatible with this XT4 frame circuit breaker?
This unit mounts directly into ABB ReliaGear neXT panelboards, standard commercial switchboards, and SACE Tmax XT panelboards.
Are the trip unit settings adjustable on this model?
No, this specific model utilizes a fixed thermal and fixed magnetic (LI) trip unit. It does not feature adjustable dials for modifying the long time or instantaneous pickup parameters.
Is this breaker suitable for direct current (DC) installations?
Yes, it is fully rated for DC circuits. It provides an interrupting capacity of 50kA at 250VDC and 65kA at 600VDC.
What wire gauges do the factory installed lugs accept?
The standard lugs on this breaker are designed to accommodate wire sizes ranging from 3/0 AWG to 350 kcmil. Always verify local codes and manufacturer torque specs for correct conductor termination.
How is this circuit breaker mounted inside an enclosure?
It features a unit mount design. This requires the breaker to be physically bolted to the panelboard chassis or switchboard backpan rather than plugging onto a busbar.
What is the short circuit rating for standard commercial 480V alternating current systems?
For 480VAC applications, this model delivers a 65kA interrupting rating, providing robust protection against high level faults in industrial and commercial distribution networks.
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