Eaton | LDB3400Y | Circuit Breaker | 400A | 3-Pole | 600V

Eaton LDB3400Y circuit breaker is a purpose-built solution for reliable overcurrent protection in 600V systems. Engineered for maintenance, retrofit, and replacement tasks where exact specifications matter, this 400A, 3-pole device integrates seamlessly with compatible Eaton panels and distribution assemblies.

• Amperage: 400A
• Poles: 3-Pole
• Voltage rating: 600V
• Part number reference: LDB3400Y (best reference for compatibility)

Why choose the Eaton LDB3400Y? Because it’s a genuine Eaton component designed to fit and function within Eaton-established frame and bus configurations. Its specifications are tailored for high-demand circuits, providing dependable protection for essential equipment and crews who rely on stable electrical performance in industrial and commercial environments.

Use cases and scenarios

• Maintenance: replace aging or worn breakers in existing Eaton installations without sacrificing compatibility or performance.
• Retrofit: upgrade or modify panel protection to accommodate higher loads while maintaining a coherent Eaton ecosystem.
• Replacement: restore original protection specs after component wear or failure, ensuring continued protection of feeders and downstream circuits.

Practical considerations

• Before ordering, confirm fit and ratings to ensure compatibility with your panel model and bus configuration.
• Use the part number LDB3400Y as the primary reference for cross-checking against manufacturer catalogs and service documentation.
• Licensed electrical professionals should perform installation and verification to meet safety standards and local codes.

In environments where dependable, high-current protection is non-negotiable, the Eaton LDB3400Y delivers a precise, compatible solution for 400A, 3-pole, 600V service. Its alignment with Eaton’s engineering and compatibility guidelines helps streamline maintenance, retrofit, and replacement projects—minimizing downtime and safeguarding critical electrical systems.