Eaton | KDC3400X | Circuit Breaker | 400A | 3-Pole | 600V

Eaton KDC3400X is a rugged, industrial-grade circuit breaker designed to deliver reliable protection for heavy electrical loads. Engineered for maintenance, retrofit, and replacement projects, this 400A, 3-pole unit is built to meet exact specifications where compatibility matters most. If your system requires precise matching ratings, the KDC3400X is purpose-made to align with Eaton’s lineup and panelgear, ensuring safe, predictable operation.

Key specifications

• Amperage: 400 A
• Poles: 3-Pole
• Voltage: 600 V

Why this model stands out

Specificity matters in protection schemes, and the KDC3400X is built for that exacting purpose. It serves as a dependable replacement or retrofit option when the exact part number is required to match existing gear. Its design keeps the installation straightforward in Eaton-supported systems, reducing the guesswork that can complicate maintenance schedules or upgrades. The part number itself is the strongest reference for compatibility, helping technicians avoid mismatches that can disrupt protection coordination.

Ideal use cases

• Retrofit projects where a precise, compatible breaker is required to fit existing Eaton panels or switchgear.
• Maintenance or replacement of legacy 400 A, 3-pole, 600 V circuits in industrial environments.
• New installations that demand strict adherence to established Eaton specifications for seamless integration.

Practical considerations and tips

Before ordering, confirm that your equipment’s ratings align with the KDC3400X: 400 A, 3-pole, 600 V. The part number is the best reference for compatibility, giving you confidence that the unit will drop into place without modification. When installing or replacing, follow standard electrical safety practices and Eaton’s installation guidelines to ensure correct mounting, alignment, and electrical connection.

What problems this solves

• Prevents overcurrent damage by providing a matching protection device for heavy-duty circuits.
• Streamlines maintenance and replacement by offering a direct, spec-compliant option within the Eaton ecosystem.
• Reduces downtime and compatibility risk in retrofit projects by using a part-number-aligned solution.

In summary

The Eaton KDC3400X is the precise, 400 A, 3-pole, 600 V circuit breaker you need for compatible panels and gear within Eaton ecosystems. It’s purpose-built for maintenance, retrofit, and replacement where exact specifications matter, with the part number serving as the clearest guide to compatibility. For engineers and technicians aiming to preserve protection coordination and system integrity, this model delivers a reliable, straightforward path to safe, continuous operation.