ABB XT4NU3175AFF000XXX Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
ABB
XT4NU3175AFF000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4NU3175AFF000XXX
Quantity
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ABB XT4NU3175AFF000XXX - 175A 3 Pole Molded Case Circuit Breaker
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Description
Part of the SACE Tmax XT series, this 175A unit-mount breaker provides robust commercial and industrial power distribution. It installs seamlessly into ABB ReliaGear neXT panelboards and SB switchboards, serving as a modern upgrade for discontinued T4N175TW components. Featuring a normal 25kAIC rating at 480VAC, the device utilizes a fixed thermal and fixed magnetic (TMF) trip unit to ensure precise LI protection across demanding three-phase electrical systems.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 |
| Frame Type | XT4 |
|---|---|
| Terminal Type | Lugs |
| For Use With | ABB ReliaGear neXT Panelboards, ReliaGear SB Switchboards |
| 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 | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Lugs Not Included, Mounting Hardware |
| 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
7 answersWhich panelboards are compatible with this XT4 breaker?
This breaker is designed for installation in ABB ReliaGear neXT panelboards and ReliaGear SB switchboards.
Can the ABB Tmax XT4 replace older GE Spectra RMS circuit breakers?
Yes, the Tmax XT4 series is the direct replacement for legacy GE Spectra RMS SF-frame breakers. ABB offers retrofit kits to install XT4 breakers into existing Spectra plug-in panelboards and switchboards.
What does the N in the XT4N part number signify?
The N designates ABB's Normal interrupting capacity for the XT4 frame, which provides a 25kAIC rating at 480VAC.
What wire sizes are accepted by the lugs on this 175A breaker?
The included lugs accept wire gauges from 4 AWG up to 300 kcmil and are rated for both copper and aluminum conductors.
Is the trip unit on the XT4NU3175AFF000XXX adjustable?
No, this specific model features a fixed thermal and fixed magnetic trip unit for Long-Time and Instantaneous (LI) protection. It does not have adjustable trip settings.
How does this circuit breaker mount into the panel?
This is a unit-mount circuit breaker that utilizes a bolt-on connection type.
Can this breaker be used in DC applications?
Yes, this breaker is rated for up to 600VDC, providing a 35kA interrupting rating at both 250VDC and 600VDC.
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