ABB XT4HU3250BY8000XXX Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
ABB
XT4HU3250BY8000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4HU3250BY8000XXX
Quantity
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ABB XT4HU3250BY8000XXX - 250A 3 Pole Molded Case Circuit Breaker
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Description
Built for advanced coordination in commercial and industrial facilities, this 250A molded case circuit breaker features adjustable thermal and magnetic trip functions. The unit integrates seamlessly into ABB ReliaGear neXT panelboards and switchboards, replacing older T4H250TW models. Rated for 65kAIC at 480VAC, the XT4HU3250BY8000XXX delivers robust current-limiting performance and reverse feed capabilities, though terminal lugs must be sourced separately.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 |
| Amperage Range | 175-250A |
|---|
| Frame Type | XT4N |
|---|---|
| Terminal Type | Lugs |
| For Use With | ABB ReliaGear neXT Panelboards, Switchboards |
| 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 | Adjustable Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Motor Operator, Padlock Attachment, Terminal Shields, Handle Lock |
|---|---|
| Accessories | Lugs Not Included |
| 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, Double Insulation, Positive Operation |
Product FAQs
5 answersWhich panelboard systems are designed to accept the XT4HU3250BY8000XXX?
This 250A breaker integrates directly into ABB ReliaGear neXT panelboards and standard ABB switchboards requiring a unit-mount XT4 frame.
What are the conductor requirements for the terminals on this breaker?
The front flat terminals accept both copper and aluminum wiring, accommodating conductor sizes from 3/0 AWG up to 350 kcmil.
How does the thermal-magnetic trip unit operate on this model?
It provides LI (Long-Time and Instantaneous) protection. Both the thermal overload and magnetic short-circuit responses are fully adjustable to meet specific system coordination requirements.
Is the XT4HU3250BY8000XXX suitable for direct current installations?
Yes, in addition to standard AC ratings, it is fully rated for DC applications. It delivers an interrupting capacity of 50kA at 250VDC and 65kA at 600VDC.
What legacy ABB circuit breakers does the XT4HU3250BY8000XXX replace?
As part of the modern SACE Tmax XT series, this XT4 frame breaker serves as a direct upgrade and replacement for older T4H250TW models.
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