ABB XT1SU3050AFD000XXX 50A 3P Molded Case Circuit Breaker – XT1 Series – Thermal Magnetic – 35kA @ 480V

The ABB XT1SU3050AFD000XXX is a 50A, 3-pole molded case circuit breaker from the SACE Tmax XT1 family, engineered for demanding commercial and industrial electrical systems. It provides reliable long-time and instantaneous protection using a fixed thermal-magnetic (LI) trip unit. Designed for unit-mount installation, it integrates seamlessly into ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and SACE Tmax XT panelboards. This breaker serves as a direct replacement for the discontinued T1N050TL and includes front terminals with reverse feed capability for flexible system design.

Voltage and Rating

• Current Rating: 50 A
• Voltage Rating: 240VAC, 480VAC, 600Y/347VAC, 250VDC
• AIC Rating:
  • 65kA @ 240VAC
  • 35kA @ 480VAC
  • 22kA @ 600Y/347VAC
  • 42kA @ 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 (front terminals)
• Application: Commercial and industrial 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
• Standards: CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489
• Approvals: CE, CSA, cULus, IEC, RoHS, UL
• Accessories Included: Lugs (Kit FC CuAl 10–2/0 AWG)
• Accessories Available: Auxiliary Switch, Shunt Trip, Undervoltage Release, Alarm Switch, Line Side Lugs

Product Data

• Manufacturer: ABB
• Model Number: XT1SU3050AFD000XXX
• Product Series: XT1 (SACE Tmax XT1)
• Product Type: Molded Case Circuit Breaker
• For Use With: ABB ReliaGear neXT Panelboards, ReliaGear SB Switchboards, SACE Tmax XT Panelboards