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ABB XT4HU3125AFJ000XXX Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
ABB
XT4HU3125AFJ000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4HU3125AFJ000XXX
Quantity
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ABB XT4HU3125AFJ000XXX - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
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Description
Belonging to the SACE Tmax XT family, this 125A MCCB provides reliable thermal-magnetic protection for commercial and industrial power systems. This three-pole unit mount breaker installs easily into ABB Tmax XT panelboards and enclosures. It also serves as an exact substitute for the legacy T4H125, ensuring a smooth upgrade path. Featuring a 150kAIC rating at 240V, this current-limiting device includes factory-installed load side lugs and is fully HACR rated for HVAC applications.Specifications
| Brand | ABB |
|---|---|
| Series | XT4 |
| Amperage | 125A |
| 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 | XT4H |
|---|---|
| Terminal Type | Lugs |
| For Use With | ABB SACE Tmax XT Panelboards, Switchboards, Enclosures |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed, 100% Rated |
Product FAQs
6 answersWhat panels and enclosures is this breaker compatible with?
It is designed for use with ABB SACE Tmax XT panelboards, switchboards, and enclosures.
Can this breaker replace legacy ABB T4 series breakers?
Yes, this XT4H frame breaker serves as a direct substitute for legacy T4H125 circuit breakers, providing a seamless upgrade path for existing installations.
Is this breaker suitable for HVAC applications?
Yes, it is fully HACR rated, making it suitable for heating, air conditioning, and refrigeration equipment protection.
What wire sizes and materials are compatible with the lugs on this breaker?
The factory-installed lugs accept 4 AWG to 300 kcmil copper or aluminum conductors.
What do the L and I stand for in the trip function code?
The LI designation indicates that the thermal-magnetic trip unit provides Long-Time overload protection and Instantaneous short-circuit protection. Both the thermal and magnetic trip thresholds are fixed on this model.
How does this breaker mount into the panel?
This is a unit mount, bolt-on circuit breaker designed to be securely bolted directly to the panelboard bus or enclosure backpan.
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