ABB XT4HU3175BYJ000XXX Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
ABB
XT4HU3175BYJ000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4HU3175BYJ000XXX
Quantity
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ABB XT4HU3175BYJ000XXX - 175A 3 Pole Molded Case Circuit Breaker
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Description
Designed for commercial and industrial power systems, the ABB XT4HU3175BYJ000XXX offers robust overcurrent protection within the SACE Tmax XT4 frame. This 3-pole, 175A breaker is equipped with an adjustable thermal and adjustable magnetic (TMA) trip unit, allowing precise tuning for long-time and instantaneous defense. It installs into ABB ReliaGear neXT and SACE Tmax XT panelboards, replacing legacy T4H175 models. Rated at 65kAIC at 480VAC, it features current-limiting capabilities.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 |
| Amperage Range | 122.5-175A |
|---|
| Frame Type | XT4N |
|---|---|
| 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, Padlock Attachment, Motor Operator, Terminal Shields |
|---|---|
| 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, Current Limiting, Reverse Feed, Double Insulation, Positive Operation |
Product FAQs
6 answersWhat type of enclosures are compatible with this ABB circuit breaker?
This unit mount breaker is designed for installation in ABB ReliaGear neXT panelboards, SACE Tmax XT panelboards, and standard switchboards. It requires the appropriate mounting hardware or chassis space for your specific enclosure.
Does this breaker plug directly onto a panelboard bus?
No, this is a unit mount circuit breaker. It must be bolted directly to the mounting pan or chassis of the panelboard or switchboard, rather than plugging onto a busbar.
What does the LI trip function indicate on this model?
The LI designation means the thermal-magnetic trip unit provides Long-Time (L) and Instantaneous (I) protection. Both the thermal and magnetic trip thresholds are adjustable, allowing electricians to fine-tune the protection curve for specific loads.
What wire sizes are accepted by the factory terminals?
The included lugs accommodate 4 AWG through 300 kcmil wire. They are rated for both copper (Cu) and aluminum (Al) conductors, providing flexibility for various feeder installations.
Can this molded case circuit breaker be used in DC applications?
Yes, it is fully rated for direct current systems. It provides an interrupting capacity of 50kA at 250VDC and 65kA at 600VDC.
How does the Tmax XT series relate to GE electrical systems?
Following ABB's acquisition of GE Industrial Solutions, the SACE Tmax XT family was integrated into the product line. These breakers are used in modern ReliaGear neXT panelboards, which serve as the upgrade path for legacy GE commercial and industrial panelboard lines.
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