Eaton | KDC3400 | Circuit Breaker | 400A | 3-Pole | 600V

Meet the Eaton KDC3400 circuit breaker—a decisive solution for protecting your 3‑phase, 600V power distribution. Built for reliability in maintenance, retrofit, and replacement projects, this 400A, 3‑pole unit keeps critical systems protected while you upgrade or refresh your electrical infrastructure. When your goal is to minimize downtime and maximize uptime, the KDC3400 delivers consistent performance and easy integration with your existing Eaton equipment.

Key specifications

• Amperage: 400A
• Poles: 3‑Pole
• Voltage: 600V
• Reference: Part number KDC3400 is the best reference for compatibility

Why this matters for your operation

• Precise protection for three‑phase systems: The 3‑pole design ensures balanced interruption across all phases, helping safeguard motors, drives, and other equipment from overcurrent events.
• High‑level compatibility: With a clear focus on matching the KDC3400 specifications, this breaker is intended for installations where exact ratings and form factor are required—reducing guesswork during replacement or retrofits.
• Strategic choice for upgrades: If you’re updating an aging panel or consolidating components in a 600V network, this unit provides a straightforward path to restore reliable protection without overhauling your distribution scheme.
• Quality you can reference: Rely on Eaton’s engineering standards and use the part number KDC3400 as the primary compatibility reference to confirm fitment before ordering.

Practical guidance for installation and sourcing

• Confirm fit and ratings before ordering: Match the exact amperage, pole count, voltage, and physical form factor to your panel and bus configuration.
• Use the part number as your compatibility guide: The KDC3400 designation is the most reliable reference when cross‑checking against drawings, catalogs, or field documents.
• Ideal scenarios: Replacement of a failed 400A, 3‑pole, 600V breaker; retrofit where a like‑for‑like protection device is required; maintenance cycles that call for upgrading to a unit that aligns with existing protection schemes.
• Safety and handling: Follow standard electrical safety practices, de‑energize equipment, and verify circuit integrity before handling or installation.