Cutler Hammer DT400NK 400A Disconnect Switch

Cutler-Hammer DT400NK Disconnect Switch — a rugged, industrial-grade solution engineered to safely isolate large electrical circuits with reliability. With a 400A rating, this disconnect is purpose-built for maintenance, retrofit, and replacement projects where exact specifications matter and downtime is costly.

• 400A current rating supports high-demand feeders, motor circuits, and power distribution paths, enabling secure isolation during service or upgrades.
• DT400NK part number serves as the primary compatibility reference. Always confirm fit and ratings against this exact model before ordering to ensure seamless integration with your existing Cutler-Hammer or Eaton-compatible equipment.
• Ideal for maintenance, retrofit, and replacement scenarios where dependable isolation is essential and system downtime must be minimized.
• Designed to align with robust, industrial power-distribution setups that rely on Cutler-Hammer components, offering a straightforward path to upgrade or replace aging disconnects without overhauling panels.
• Durable construction tailored for demanding environments, delivering consistent performance across service cycles and retrofit projects.

Use cases and practical scenarios

In manufacturing facilities, the DT400NK is well-suited for isolating feeders that supply heavy machinery, conveyors, or large HVAC units during scheduled maintenance. It also serves as a reliable replacement when aging disconnects in switchgear need a like-with-like part that matches existing wiring and mounting footprints. For retrofit projects, it provides a compatible disconnect point that supports updated control schemes while preserving the integrity of your power distribution layout.

How to ensure the right fit

Before placing an order, verify that your application requires a 400A disconnect and that the DT400NK is the correct reference for your equipment. The part number is the strongest indicator of compatibility, so cross-check it against your gear catalog or installation drawings. Ensure the enclosure, mounting arrangement, and conductor sizing align with your system’s requirements, and always follow applicable electrical codes and lockout/tagout procedures during installation.

Why choose this disconnect switch? It combines industrial-strength reliability with precise compatibility for maintenance, retrofit, and replacement projects. By selecting the DT400NK, you’re choosing a targeted, components-based solution that minimizes guesswork and supports a smooth, controlled isolation process for your largest circuits.