ABB XT5HU340ABFN000XXX Circuit Breaker, 400A, 3-Pole, 600V

The ABB XT5HU340ABFN000XXX Circuit Breaker is a rugged, industrial-grade protective device designed to keep large electrical systems safe and uptime-focused. With a 400 A rating, 3 poles, and a 600 V capacity, this unit is built to handle demanding 3-phase applications typical of manufacturing floors, distribution panels, and heavy equipment feeders. As part of ABB’s XT5H Case Breaker family, it combines robust protection with dependable performance essential for mission-critical service, maintenance, and replacement projects.

• Amperage: 400 A — designed for high-current circuits in industrial environments.
• Pole configuration: 3-pole design for 3-phase protection and balanced fault clearing.
• Voltage rating: 600 V, suitable for common industrial power distribution standards.
• Series: XT5H Case Breaker family — a trusted platform known for durability in harsh electrical settings.
• Part number: XT5HU340ABFN000XXX — use this exact SKU to verify compatibility with your panel and application.
• Application focus: ideal for industrial service, ongoing maintenance programs, and replacement projects where reliable circuit protection is critical.

Why this specific XT5HU340ABFN000XXX stands out: it aligns with ABB’s rigorous design philosophy for industrial protection, delivering precise fault interruption and consistent performance under demanding loads. The three-pole arrangement ensures effective protection across all phases, reducing the risk of imbalanced faults and helping to safeguard motors, feeders, and other heavy-duty loads.

Use-case guidance to maximize value: assign this breaker to 3-phase distribution feeders, motor control centers, or service entrance panels where a 400 A rating is required and 600 V is within the system’s spec. It’s particularly well-suited for situations where you’re upgrading or replacing end-of-life protective devices within the XT5H family, ensuring compatibility and streamlined maintenance planning.

Compatibility and support: verify fit by cross-checking the exact part number against your equipment model and application requirements. If you’re unsure about compatibility, our team can help confirm whether XT5HU340ABFN000XXX matches your panel, bus design, and protection needs — just reach out with the part number and application details.

Practical installation notes: before integrating into your system, review the panel’s voltage class, conductor sizing, and protective coordination with upstream devices. Keeping a spare XT5H-series breaker on hand can minimize downtime during planned maintenance or unexpected outages.

With the ABB XT5HU340ABFN000XXX, you’re choosing a purpose-built solution for reliable, industrial-grade circuit protection that aligns with your 3-phase, 600 V infrastructure, while offering the confidence of compatibility checks through the exact part number.