Eaton | KDB3400K | Circuit Breaker | 3-Pole

The Eaton KDB3400K 3-Pole Circuit Breaker is a purpose-built solution for maintenance, retrofit, and replacement projects where exact spec matching is essential. This 3-pole design provides reliable protection for three-phase systems and helps ensure your panel configuration stays compliant and safe.

Why this Eaton breaker stands out

• Precise compatibility: The part number KDB3400K is the best reference to confirm fit with your Eaton panel, reducing guesswork during replacements or upgrades.
• Three-pole configuration: Designed for three-phase applications, making it ideal for commercial and industrial electrical setups that require coordinated protection across all phases.
• Maintenance, retrofit, and replacement ready: Specifically suited for ongoing service needs where matching specs matters, ensuring seamless integration with existing electrical infrastructure.

Key details to guide your purchase

• Pole configuration: 3-Pole
• Reference reference: Use the part number KDB3400K to verify compatibility with your panel and system ratings.
• Ordering tip: Confirm fit and ratings before ordering; the part number is the most reliable reference for ensuring proper match.

Ideal use cases

Consider the Eaton KDB3400K when you’re servicing or upgrading panels in industrial environments, commercial facilities, or equipment rooms that rely on precise three-phase protection. It’s particularly valuable for:

• Panel maintenance where a direct KDB3400K replacement is required
• Retrofit projects that need exact spec alignment with existing Eaton infrastructure
• Spare parts planning to minimize downtime during component failures

In short, the KDB3400K is your reliable, spec-faithful choice for three-pole protection within Eaton-based electrical systems. By centering compatibility on the exact part number, you simplify procurement, reduce installation risk, and keep your three-phase protection consistent across upgrades and repairs.