ABB XT5LU340ABFN000XXX Circuit Breaker, 400A, 3-Pole

The ABB XT5LU340ABFN000XXX circuit breaker is engineered for demanding industrial environments, delivering dependable 400 A protection across a 3-pole configuration. Designed for industrial electrical service, maintenance, and replacement projects, this unit helps safeguard critical equipment and keep power distribution running smoothly. Always verify fit by part number and application requirements to ensure a seamless integration.

Key advantages that set this breaker apart

• Robust three‑pole protection provides reliable three‑phase interruption and isolation, ideal for balanced, high‑demand systems.
• 400 A rating supports substantial feeder and main circuit protection in industrial panels and switchgear.
• trusted ABB engineering means proven performance, consistent behavior across installations, and easier integration with existing ABB components.
• Clear path to replacement designed to simplify maintenance turnarounds and reduce downtime when upgrading or restoring protective circuits.
• Part-number driven compatibility the exact model XT5LU340ABFN000XXX ensures the right fit when you’re matching against drawings, schematics, or repair inventories.

Specs at a glance

• Product type: Circuit Breaker
• Amperage: 400 A
• Polls: 3
• Manufacturer: ABB
• Part number: XT5LU340ABFN000XXX

Ideal use cases

• New installations in industrial facilities where three‑phase protection is essential
• Maintenance projects that require a reliable, easy-to-replace main or feeder breaker
• Replacement of aging protection devices in plant electrical infrastructure
• Panel upgrades and modernization efforts seeking consistent ABB components

Usage, compatibility, and practical tips

• Compatibility matters verify fit by part number and application requirements to ensure correct mounting, trip characteristics, and electrical fit within your panel or switchgear.
• Plan for quick replacements keep the XT5LU340ABFN000XXX on hand as a purpose‑built spare for high‑demand circuits to minimize downtime.
• Maintenance mindset include routine inspections of protective devices in your preventive maintenance schedule to catch wear, corrosion, or mounting issues early.
• Documentation alignment cross‑check the part number against your electrical drawings and bill of materials to prevent mismatches during procurement and installation.

Whether you're provisioning a brand‑new industrial setup or restoring a legacy system, the ABB XT5LU340ABFN000XXX circuit breaker delivers the dependable protection you need with the compatibility and reliability you expect from ABB. Use the exact part number to confirm suitability for your application, and proceed with confidence on your next maintenance, service, or replacement project.