ABB XT4NU3150BYJ000XXX Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
ABB
XT4NU3150BYJ000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4NU3150BYJ000XXX
Quantity
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ABB XT4NU3150BYJ000XXX - 150A 3 Pole Molded Case Circuit Breaker
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Description
Offering adjustable thermal and magnetic trip settings, this 150-amp breaker allows precise LI protection tuning for complex industrial loads. It integrates into ABB ReliaGear neXT power panels, ReliaGear SB switchboards, and standard XT panelboards. This unit replaces older T4N150TW models, bringing modern current-limiting capabilities to existing infrastructure. It features front terminals for versatile connection options and carries a robust 65kA interrupt rating at 240VAC.Specifications
| Brand | ABB |
|---|---|
| Series | XT4 |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 600VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 35kA @ 250VDC, 35kA @ 600VDC |
| Amperage Range | 105-150A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | ABB ReliaGear neXT Power Panels, ReliaGear SB 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, Padlock Attachment |
|---|---|
| Accessories | Front Terminals Included, 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, Reverse Feed |
Product FAQs
8 answersWhich panelboards and switchboards are compatible with this 150A XT4 breaker?
This breaker is designed for use with ABB ReliaGear neXT Power Panels, ReliaGear SB Switchboards, and SACE Tmax XT Panelboards.
How does the thermal magnetic trip unit function on this XT4 breaker?
It features an LI (Long-Time, Instantaneous) trip function. The adjustable thermal setting protects against overloads, while the adjustable magnetic setting provides short-circuit protection.
What wire sizes are accepted by the standard lugs on this breaker?
The standard lugs accept 4 AWG to 300 kcmil copper (Cu) or aluminum (Al) conductors.
Can this XT4 breaker replace older legacy GE breakers?
Yes, the SACE Tmax XT4 series is the modern replacement for legacy GE T4N150TW models, upgrading existing infrastructure with current-limiting capabilities.
How is the breaker secured into a ReliaGear neXT panelboard?
It utilizes a plug-in rail system where the breaker is pushed into the bus stack and secured with mounting screws. The grooves on the breaker insulator must align with the bus stack cover to ensure full insertion.
What is the reference ambient temperature for the thermal magnetic trip unit?
The reference temperature for the trip unit calibration is +40 degrees Celsius. Operating outside this temperature may require consulting performance derating tables.
Can this 3-pole XT4 breaker be used in single-phase applications?
Yes, XT4 three-pole circuit breakers equipped with thermal magnetic trip units are suitable for single-phase applications up to 600VAC according to UL standards.
Does this breaker support field-installable internal accessories?
Yes, the SACE Tmax XT4 frame supports common internal accessories like auxiliary contacts, shunt trips, and undervoltage releases, which can be installed in the field.
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