ABB XT4NU3175BYJ000XXX Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
ABB
XT4NU3175BYJ000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4NU3175BYJ000XXX
Quantity
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ABB XT4NU3175BYJ000XXX - 175A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, the ABB XT4NU3175BYJ000XXX is a 3-pole, 175A molded case circuit breaker from the SACE Tmax XT4 family. It provides reliable overcurrent protection for heavy-duty electrical systems. This unit mount MCCB installs into ABB ReliaGear neXT panelboards and ReliaGear SB switchboards. It also serves as a drop-in replacement for legacy Tmax T4N200TW breakers. Rated at 65kAIC at 240V, it features an adjustable thermal-magnetic trip unit.Specifications
| Brand | ABB |
|---|---|
| Series | XT4 |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC, 600VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600Y/347VAC, 35kA @ 250VDC, 35kA @ 600VDC |
| Amperage Range | 122.5-175A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | ABB ReliaGear neXT Panelboards, ABB ReliaGear SB Switchboards |
| Wire Gauge | 4 AWG - 300 kcmil |
| 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, Alarm Switch, Motor Operator, Handle Lock |
|---|---|
| Accessories | Lugs |
| 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, Reverse Feed |
Product FAQs
8 answersWhich panelboards are compatible with this XT4 circuit breaker?
This breaker is designed for installation in ABB ReliaGear neXT panelboards and ABB ReliaGear SB switchboards.
How does this breaker mount into the electrical enclosure?
This specific model features a unit mount design. It bolts directly into the panelboard or switchboard chassis, providing a secure mechanical and electrical connection.
What wire sizes are accepted by the standard lugs?
The factory-installed lugs on this breaker accept copper or aluminum conductors ranging from 4 AWG to 300 kcmil.
Can the trip unit on this breaker be adjusted in the field?
Yes. It is equipped with a Thermal Magnetic Adjustable trip unit. This allows you to independently adjust both the thermal overload and magnetic short-circuit trip thresholds to fine-tune protection for your specific load.
What interrupting capacity does the XT4N frame provide?
The N designation indicates a Normal interrupting capacity. This provides a maximum interrupting rating of 65kA at 240VAC, 25kA at 480VAC, and 18kA at 600VAC.
What does the LI trip function code indicate?
The LI designation means the thermal-magnetic trip unit provides Long-Time overload protection and Instantaneous short-circuit protection. Both functions are adjustable on this specific model.
Can this 3-pole breaker be used in single-phase applications?
Yes. ABB XT4 three-pole circuit breakers equipped with thermal-magnetic trip units are UL-listed for single-phase applications up to 600VAC.
What legacy circuit breakers does this model replace?
This XT4 breaker serves as a direct upgrade path for legacy ABB Tmax T4N series breakers, including T4N175 TMA devices, offering modernized protection within the same footprint.
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