Eaton | CKD3400X | Circuit Breaker | 400A | 3-Pole | 600V

When reliable protection matters most in industrial power systems, the Eaton CKD3400X Circuit Breaker delivers proven performance for three-phase distribution. This 400 A, 3-pole unit is engineered to handle demanding equipment and ensures rapid fault isolation across all three phases, with a 600 V rating that covers a wide range of control and motor circuits.

Key specifications at a glance

• Amperage: 400 A
• Pole configuration: 3-Pole (three-phase protection)
• Voltage rating: 600 V
• Part reference: CKD3400X — the best reference for compatibility
• Ideal for: maintenance, retrofit, and replacement where exact specifications are required

Why choose the CKD3400X for your system

The CKD3400X isn’t just a spec sheet entry—it’s a dependable component designed to integrate smoothly with Eaton’s protection ecosystem. By choosing the CKD3400X, you’re selecting a proven form factor and rating that align with existing Eaton panelboards, switchgear, and distribution gear, helping you maintain consistent protection characteristics across your installation.

Who benefits most

• Maintenance teams performing routine service on 3-phase electrical systems up to 600 V
• Retrofit projects upgrading or replacing aging protection devices with a compatible Eaton part
• Installation engineers sourcing a ready-to-match 400 A, 3-pole breaker for new or expanded industrial circuits

Practical considerations and usage notes

Before placing an order, verify that CKD3400X fits your panel or switchgear and that the amperage, pole count, and voltage rating match your design requirements. The part number CKD3400X serves as the most reliable compatibility reference, ensuring you source the correct device for your exact installation. This targeted approach minimizes downtime and ensures consistent protective performance across your electrical system.

Usage scenarios in the real world

• Upgrading a legacy motor control center to maintain a coordinated 3-phase protection scheme
• Replacing failed or discontinued breakers in industrial panels while preserving circuit integrity
• In retrofit projects where exact Eaton specifications are required to maintain certificate of conformity or warranty coverage

Choosing the right circuit breaker is about precise fit and dependable operation. The Eaton CKD3400X delivers both, with a clear alignment to your 400 A, 3-pole, 600 V protection needs. Ensure compatibility by confirming fit and ratings against your installation documentation, and reference the CKD3400X part number for an accurate match.