ABB XT4HU3175AY8000XXX Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
ABB
XT4HU3175AY8000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4HU3175AY8000XXX
Quantity
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ABB XT4HU3175AY8000XXX - 175A 3 Pole Molded Case Circuit Breaker
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Description
Delivering 175A of robust power control, this MCCB utilizes fixed thermal and magnetic trip technology for industrial applications. The three-pole unit is engineered to fit seamlessly into ABB ReliaGear neXT panelboards and switchboards. It also replaces older T4H175TW breakers in existing setups. Rated for 150kAIC at 240V, the current-limiting breaker ensures superior fault protection. It features double insulation, positive operation, and a HACR rating.Specifications
| Brand | ABB |
|---|---|
| Series | XT4 |
| Amperage | 175A |
| 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 |
| 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 | Fixed Thermal, Fixed 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, cULus, IEC, KEMA, RINA, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed, Double Insulation, Positive Operation |
Product FAQs
7 answersWhat panelboards are compatible with the XT4HU3175AY8000XXX?
This XT4 frame circuit breaker is designed for installation in ABB ReliaGear neXT panelboards and switchboards.
Does this breaker feature an adjustable trip unit?
No, the XT4HU3175AY8000XXX is equipped with a fixed thermal-magnetic trip unit (TMF). Both the long-time (thermal) and instantaneous (magnetic) trip functions are factory-fixed and cannot be adjusted in the field.
Can this 3-pole XT4 breaker be used in single-phase applications?
Yes, ABB XT4 three-pole circuit breakers are UL-marked as suitable for single-phase applications up to 600VAC.
Can power be reverse-fed through the bottom terminals of this breaker?
Yes, power can be supplied from the bottom terminals of the XT4 breaker up to its maximum rating of 600V.
What is the allowable operating temperature range for this circuit breaker?
Tmax XT circuit breakers can operate in ambient air temperatures between -25 and +70 degrees Celsius. The reference temperature for the thermal-magnetic trip unit is 40 degrees Celsius. Operating above this reference temperature requires consulting ABB derating tables.
What wire sizes are accepted by the factory-installed lugs?
The included lugs accept copper (Cu) or aluminum (Al) conductors ranging from 3/0 AWG to 350 kcmil. Ensure wire sizing is based on the 75 degrees Celsius ampacity ratings as required by code.
Is this breaker suitable for DC voltage systems?
Yes, the thermal-magnetic trip unit allows this breaker to be used in DC applications. It is rated for up to 600VDC with a 65kA interrupting capacity, making it suitable for specific industrial or renewable energy DC circuits.
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