ABB XT4HU3225BYJ000XXX Molded Case Circuit Breaker
- 225A
- 3 Pole
- Unit Mount
ABB
XT4HU3225BYJ000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4HU3225BYJ000XXX
Quantity
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ABB XT4HU3225BYJ000XXX - 225A 3 Pole Molded Case Circuit Breaker
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Description
Designed for heavy-duty applications, the ABB XT4HU3225BYJ000XXX delivers reliable 225A circuit protection. As a core component of the SACE Tmax XT family, this 3-pole molded case circuit breaker supports commercial and industrial facilities. It integrates seamlessly into ReliaGear neXT panelboards and replaces legacy Tmax T4H225 breakers. Rated for 65 kAIC at 480VAC, it utilizes a TMA trip unit with adjustable thermal and magnetic settings to ensure precise, current-limiting performance.Specifications
| Brand | ABB |
|---|---|
| Series | XT4 |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC, 600VDC |
| Phase | 3 |
| AIC Rating | 150kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 25kA @ 600VAC, 50kA @ 250VDC, 65kA @ 600VDC |
| Amperage Range | 157.5-225A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | ReliaGear neXT Panelboards, Switchboards, SACE Tmax XT Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 4 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, Rotary Handle |
|---|---|
| Accessories | Lugs Not Included, Front Terminals Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CCC, CSA, cULus, IEC, KEMA, RINA, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed |
Product FAQs
8 answersWhat panelboards are compatible with the XT4HU3225BYJ000XXX?
This XT4 frame breaker is designed for seamless integration into ABB ReliaGear neXT panelboards, SACE Tmax XT panelboards, and compatible switchboards.
What does the H in the XT4HU3225BYJ000XXX catalog number signify?
The H indicates a High interrupting capacity rating. For the XT4 frame, this delivers a maximum interrupting rating of 150kA at 240VAC and 65kA at 480VAC, making it suitable for systems with high available fault currents.
How does the adjustable thermal-magnetic trip unit function on this XT4 breaker?
The TMA (Thermal Magnetic Adjustable) trip unit provides LI (Long-Time and Instantaneous) protection. It allows electricians to independently adjust the thermal threshold for overload protection and the magnetic threshold for short-circuit protection to precisely match the load requirements.
What is the mechanical life expectancy of the XT4 frame?
The SACE Tmax XT4 frame is designed for heavy-duty commercial and industrial use, featuring a mechanical life rating of 25,000 operations.
Can this 3-pole XT4 breaker be used in single-phase applications?
Yes. Under UL standards, ABB XT4 three-pole circuit breakers equipped with thermal-magnetic trip units are marked as suitable for single-phase applications up to 600VAC.
What are the wiring guidelines for the standard lugs on this 225A breaker?
The factory lugs accept 4 AWG to 300 kcmil copper or aluminum (Cu/Al) conductors. Because torque specifications vary based on the exact wire gauge used, you must apply the specific tightening torque value printed directly on the terminal body.
What is the ambient temperature rating for the XT4 thermal-magnetic trip unit?
The reference calibration temperature for the trip unit is 40 degrees Celsius (104 degrees Fahrenheit). If operating in ambient temperatures outside of this baseline, you must apply ABB temperature performance derating factors to ensure accurate protection.
How is this breaker applied in DC electrical systems?
This breaker is fully rated for DC applications, offering 50kA at 250VDC and 65kA at 600VDC. When installing in a DC system, you must wire the poles in series according to ABB DC circuit guidelines to safely interrupt the fault current.
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