Eaton | LD3400X | Circuit Breaker | 400A | 3-Pole | 600V

The Eaton LD3400X circuit breaker is engineered for reliability in demanding electrical environments. Rated at 400A and built as a 3-pole unit for 3-phase power systems, it provides robust overcurrent protection for networks up to 600V. Whether you're performing maintenance, a retrofit, or a replacement, this unit is designed to slot into compatible Eaton panels and meet exact specifications.

Key specifications at a glance

• Amperage: 400 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Part number reference: LD3400X

Why this matters for your system

• Precise compatibility: Use the LD3400X when your maintenance or retrofit plan requires the exact Eaton part number. The best reference for compatibility is the part number itself, ensuring you maintain system protection and labeling accuracy.
• Three-phase protection: A 3-pole design guards all phases of your distribution network, helping prevent unbalanced loads and equipment damage in heavy-duty environments.
• Industrial-grade voltage handling: With a 600V rating, it supports common industrial and commercial power distributions, including motor and drive systems that demand high reliability.
• Flexible application: Ideal for replacement and retrofit projects where current electrical specs align with this unit, enabling a smooth upgrade path without rewiring or panel redesign.

Who it's for

This Eaton LD3400X circuit breaker is well-suited for facilities undertaking panel upgrades, equipment modernization, or ongoing maintenance in manufacturing floors, data centers, or large commercial complexes that rely on sturdy, proven overcurrent protection. If your system operates on three-phase power and requires a 400A, 600V protection device, the LD3400X is a direct-fit option to maintain safety margins and protection reliability.

How to verify fit and order confidently

Before you purchase, confirm that your equipment matches these specs and that the LD3400X is the correct part number for your Eaton installation. The part number is the most reliable reference for compatibility, ensuring safe operation and consistent electrical protection across your distribution network.