ABB XT4 175A 3P Molded Case Circuit Breaker – XT4 Series – Thermal Magnetic (TMF) – 100kA @ 480V

This 175A, 3-pole molded case circuit breaker from the ABB SACE Tmax XT4 family is engineered for high-performance commercial and industrial power distribution systems. Designed as a direct replacement for legacy T4L175 breakers, it ensures seamless integration into existing infrastructure.

Featuring a fixed thermal-magnetic (TMF) trip unit, this MCCB delivers dependable long-time and instantaneous (LI) protection against overloads and short circuits. The unit-mount configuration allows installation into ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and SACE Tmax XT enclosures.

With a high interrupting capacity of up to 200kA at 240VAC and 100kA at 480VAC, this breaker provides superior fault-clearing capability in demanding electrical environments. Lugs are sold separately, offering flexibility for custom wiring configurations.

Voltage and Rating

• Current Rating: 175 A
• Voltage Ratings: 240VAC, 480VAC, 600VAC, 250VDC, 600VDC
• AIC Rating:
  • 200kA @ 240VAC
  • 100kA @ 480VAC
  • 50kA @ 600VAC
  • 85kA @ 250VDC
  • 75kA @ 600VDC

Key Specifications

• Device Type: Molded Case Circuit Breaker (MCCB)
• Series: XT4 (SACE Tmax XT4)
• Number of Poles: 3-Pole
• Phase: 3 Phase
• Trip Technology: Thermal Magnetic (TMF)
• Trip Function Code: LI
• Trip Function: Long-Time, Instantaneous
• Trip Adjustability: Fixed Thermal, Fixed Magnetic
• Mounting Style: Unit Mount
• Terminal Type: Lugs (Not Included)

Technical Specifications

• Wire Range: 4 AWG – 300 kcmil (Cu/Al)
• Max Wire Size: 300 kcmil
• Min Wire Size: 4 AWG
• Standards: CSA C22.2 No. 5, IEC 60947-2, UL 489
• Approvals: CCC, CSA, cULus, IEC, KEMA, RINA, UL
• Temperature Rating: -25°C to 70°C

Features

• HACR Rated
• Current Limiting Design
• Reverse Feed Capable
• Trip-Free Mechanism
• Quick-Make / Quick-Break Operation

Returns are easy

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

FREE Shipping on orders over $149.

My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

Same Day Shipping

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In rare circumstances, My Circuit Breakers may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

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.