DKDN400 | Circuit Breaker | 400A

Introducing the DKDN400 — a purpose-built industrial circuit breaker identified by part number DKDN400, engineered for maintenance, retrofit, and replacement projects where exact specifications matter. With a clear 400A rating, this breaker is designed to deliver dependable protection in demanding industrial environments and when matching existing equipment is essential.

Why the DKDN400 stands out for industrial protection

• 40O Ampere protection: A precise 400A rating provides reliable overcurrent protection for feeders and distribution circuits in harsh industrial settings.
• Direct compatibility focus: The DKDN400 model is the strongest reference for matching your current gear, helping minimize downtime during replacement or retrofits.
• Maintenance, retrofit, or replacement ready: Designed to be used where you need to upgrade, repair, or replace existing protection without introducing mismatches in form factor or specs.
• Streamlined procurement: By using the exact DKDN400 part number, you simplify ordering decisions and ensure you’re selecting the correct protection device for your panel or MCCs.

Ideal use cases

• Maintenance shutdowns where a like-for-like 400A circuit breaker is required to restore full protection quickly.
• Retrofit projects that upgrade or standardize protection across multiple panels while preserving existing architecture.
• Replacement of aging breakers in industrial distribution panels, switchgear, or motor control centers where the DKDN400 matches the required specs.

What to check before you buy

Before ordering, confirm fit and ratings to ensure a seamless replacement. The part number is the best reference for compatibility, and the DKDN400 model should align with your panel documentation and system requirements.

Installation and handling guidance

Plan for safe, code-compliant installation by coordinating with a licensed electrician. Verify that your system is de-energized before any replacement, and follow your facility’s safety procedures and applicable electrical codes. While the DKDN400 provides the required amperage rating, the exact mounting, wiring, and trip characteristics should match your existing hardware configuration.

Specifications at a glance

Amperage: 400A

Part reference: DKDN400

Whether you’re conducting routine maintenance, planning a retrofit, or performing a precise replacement, the DKDN400 400A circuit breaker is built to deliver consistent protection and straightforward compatibility. If you’re aligning with a specific panel or MCC specification, rely on the DKDN400 part number as your clear, reliable reference to ensure a smooth, downtime-minimizing upgrade.