ABB XT4HU3090AFJ000XXX 90A 3P Molded Case Circuit Breaker – XT4 Series – Thermal Magnetic – 150kA @ 240V

The ABB XT4HU3090AFJ000XXX is a 90A, 3-pole molded case circuit breaker from the SACE Tmax XT4 series, engineered for heavy-duty commercial and industrial power distribution applications. It provides dependable overcurrent protection using a fixed thermal-magnetic trip unit, delivering precise long-time and instantaneous (LI) protection.

This unit-mount MCCB is designed for installation in ABB SACE Tmax XT panelboards, switchboards, and electrical enclosures. The XT4 frame supports higher-capacity wiring and enhanced interrupting performance, making it suitable for demanding electrical environments requiring high fault protection levels.

With an exceptionally high interrupting rating of 150kA at 240VAC, this breaker delivers strong fault-clearing capability while maintaining system stability and safety in critical installations.

Voltage and Rating

• Current Rating: 90 A
• Voltage Rating: 240VAC, 480VAC, 600VAC, 250VDC, 600VDC
• AIC Rating:
  • 150kA @ 240VAC
  • 65kA @ 480VAC
  • 25kA @ 600VAC
  • 50kA @ 250VDC
  • 65kA @ 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
• 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 heavy-duty commercial distribution

Technical Specifications

• Wire Range: 4 AWG – 300 kcmil (Cu/Al)
• Max Wire: 300 kcmil
• Min Wire: 4 AWG
• Temperature Rating: -25°C to 70°C
• Construction Features: HACR Rated, Current Limiting, Reverse Feed, 100% Rated
• Standards: CSA C22.2 No. 5, IEC 60947-2, UL 489
• Approvals: CE, CSA, cULus, IEC, KEMA, UL

Product Data

• Manufacturer: ABB
• Model Number: XT4HU3090AFJ000XXX
• Product Series: XT4 (SACE Tmax XT4)
• Installation Type: Unit Mount
• Compatible Equipment: ABB SACE Tmax XT Panelboards, Switchboards, 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.