ABB XT1HU3125AFD000XXX 125A 3P Molded Case Circuit Breaker – XT1 Series – Thermal Magnetic – 65kA @ 480V

The ABB XT1HU3125AFD000XXX is a high-performance 3-pole molded case circuit breaker from the SACE Tmax XT1 series, designed for industrial and commercial power distribution systems. Rated at 125A, it features a fixed thermal-magnetic (TMF) trip unit that delivers precise long-time and instantaneous (LI) protection. Engineered for unit mount installation, it integrates into ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and Tmax XT enclosures, serving as a reliable upgrade for legacy Tmax T1 series breakers.

Voltage and Rating

• Current Rating: 125 A
• Voltage Rating: 240VAC, 480VAC, 600Y/347VAC, 250VDC
• AIC Rating:
  • 100kA @ 240VAC
  • 65kA @ 480VAC
  • 25kA @ 600Y/347VAC
  • 50kA @ 250VDC

Key Specifications

• Device Type: Molded Case Circuit Breaker
• Series: XT1
• Number of Poles: 3-Pole
• Phase: 3 Phase
• Trip Technology: Thermal Magnetic
• Trip Function Code: LI
• Trip Function: Long-Time, Instantaneous
• Trip Adjustability: Fixed Thermal, Fixed Magnetic
• Mounting Style: Unit Mount
• Terminal Type: Lugs
• Application: Industrial and commercial power distribution

Technical Specifications

• Wire Range: 10 AWG – 2/0 AWG
• Max Wire: 2/0 AWG
• Min Wire: 10 AWG
• Temperature Rating: -25°C to 70°C
• Construction Features: HACR Rated, Current Limiting, Reverse Feed, Double Insulated, Trip-Free Mechanism
• Standards: CSA C22.2 No. 5, IEC 60947-2, UL 489
• Approvals: CE, CSA, cULus, HACR, IEC, UL
• Accessories Available: Auxiliary Switch, Shunt Trip, Undervoltage Release
• Accessories Included: Line and Load Lugs Included

Product Data

• Manufacturer: ABB
• Model Number: XT1HU3125AFD000XXX
• Product Series: XT1 (SACE Tmax XT)
• Product Type: Molded Case Circuit Breaker
• For Use With: ABB ReliaGear neXT Panelboards, ReliaGear SB Switchboards, Tmax XT Enclosures

Returns are easy

You may return items within 30 days of delivery for a refund.

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My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.