ABB XT5NQ340AFFF000XXX Circuit Breaker, 400A, 3-Pole, 600V

Designed for industrial service, maintenance, and replacement projects, the ABB XT5NQ340AFFF000XXX circuit breaker delivers dependable protection for demanding electrical systems. This 400 A, 3-pole device is built to safeguard three-phase power distribution at up to 600 V, helping to keep your operations safe and productive even in tough environments.

Key specifications at a glance

• Amperage: 400 A
• Poles: 3-pole (3P)
• Voltage rating: 600 V
• Part number: XT5NQ340AFFF000XXX — use this exact code to verify compatibility with your application and panel footprint

Why this matters for your operation

• Targeted three-phase protection: The 3-pole design ensures balanced protection across all phases, reducing the risk of phase-related faults in motors, drives, and other essential loads.
• High-current capability: With a 400 A rating, it’s suited for robust industrial circuits and equipment, supporting reliable startup and operation of demanding machinery.
• 600 V applicability: Designed for industrial power distributions that operate at or below 600 V, providing compatibility with common factory and plant electrical architectures.
• Part-number driven compatibility: To confirm fit for your specific panel, enclosure, and application, rely on the exact XT5NQ340AFFF000XXX part number and the manufacturer’s guidelines.

Ideal use cases

• New installations in manufacturing plants requiring solid three-phase protection for high-current circuits
• Replacement of aging or failed breakers in existing 3P, 600 V systems
• Maintenance shutdowns where precise part matching minimizes downtime and ensures quick, reliable swaps

Practical guidance and support

• If you’re unsure about part number compatibility or mounting requirements, message us to verify fit, confirm electrical compatibility, and align with your system’s protection strategy.
• Always follow ABB installation instructions and local electrical codes when integrating this circuit breaker into your 3P 600 V distribution.

The ABB XT5NQ340AFFF000XXX circuit breaker is a purpose-built solution for industrial environments, combining a robust 400 A rating with a 3-pole configuration to protect three-phase equipment and workflows. Use the part number to confirm compatibility with your application, and rely on ABB’s heritage of dependable electrical protection to keep your operations safe and performance-ready.