Eaton | CKD3400W | Circuit Breaker | 400A | 3-Pole

Meet the Eaton CKD3400W Circuit Breaker — a rugged 400A, 3-Pole device built for reliability in demanding electrical environments. This part is designed for maintenance, retrofit, and replacement projects where exact spec matching is essential, helping you keep critical systems online with minimal downtime.

Key specifications at a glance

• Amperage: 400A
• Poles: 3-Pole (three-phase)
• Part number: CKD3400W
• Best compatibility reference: Use CKD3400W to verify fit with compatible Eaton panels
• Ideal use cases: maintenance, retrofit, replacement where matching specs are required

Why this breaker matters in real-world setups

The CKD3400W is engineered to slot into Eaton panelboards and distribution systems that require a precise 400A, 3-pole protection device. In facilities with heavy electrical loads—manufacturing floors, data centers, large commercial suites—having an exact-match replacement minimizes wiring changes, preserves trip characteristics, and supports quick, reliable downtime recovery.

Practical scenarios you’ll encounter

• Maintenance: Replace a failed breaker with an exact 400A, 3-pole Eaton part to restore full protection without modifications.
• Retrofit: Upgrade aging panels that require a like-for-like CKD-series part to maintain system reliability and consistent protection standards.
• Replacement: Use the CKD3400W reference to confirm compatibility and streamline ordering in inventory processes.

Installation and compatibility tips

• Before ordering, confirm your panel model and wiring configuration align with a 3-Pole, 400A Eaton breaker.
• Cross-reference the exact part number CKD3400W to ensure seamless fit and replacement accuracy.
• Keep a record of the part number in your asset management logs to simplify future maintenance and part sourcing.

Choosing the right part matters. With the Eaton CKD3400W, you’re selecting an authentic, precisely matched component designed to integrate smoothly with Eaton’s electrical ecosystem, helping you maintain performance, safety, and uptime across your three-phase power distribution.