ABB XT4SU3125AFF000XXX Circuit Breaker, 125A, 3-Pole, 600V

Meet ABB XT4SU3125AFF000XXX, a robust circuit breaker designed for industrial electrical service, maintenance, and replacement projects. With a 125 A rating, a 3-pole configuration for 3-phase protection, and a 600 V maximum, this unit is built to safeguard critical power circuits in demanding environments. Use the part number XT4SU3125AFF000XXX to confirm compatibility for your application.

Key specifications at a glance

• Amperage: 125 A
• Poles: 3
• Voltage rating: 600 V
• Part Number: XT4SU3125AFF000XXX
• Ideal for: industrial electrical service, maintenance, and replacement projects
• Compatibility check: verify fit by part number and application requirements

Why this circuit breaker stands out

• Designed for reliable 3-phase protection in industrial panels, ensuring balanced disconnection across all conductors.
• 125 A rating strikes a practical balance between protecting equipment and allowing efficient power distribution for medium-to-heavy loads.
• 600 V rating covers a wide range of industrial power networks, providing versatile compatibility in typical manufacturing and distribution environments.
• ABB’s lineage of rugged, dependable hardware translates to lower maintenance downtime and longer service intervals in challenging settings.
• Part-number–based compatibility minimizes guesswork during replacements or panel upgrades, helping you get the right fit the first time.

Practical use cases and scenarios

• Replacing worn or faulty breakers in existing 3-phase panel boards or switchgear during routine maintenance.
• Upgrading distribution feeders and motor control circuits in warehouses, factories, or processing facilities.
• Provisioning spare units for critical lines to reduce downtime during outages or service interruptions.
• Integrating into new installations where reliable 3-phase protection and a 125 A main/branch circuit capability are required.

Installation and compatibility tips

Notes: Verify fit by part number and application requirements. If you need help matching a part number or confirming compatibility, message us and we’ll help.