Eaton HMCP400X5 - 400A, Circuit Breaker

The Eaton HMCP400X5 is a rugged 400 A circuit breaker designed to deliver dependable overcurrent protection in demanding electrical environments. Built to be installed in panelboards, switchboards, control panels, and OEM equipment, this breaker is a reliable cornerstone for safe, continuous operation in the most challenging setups.

Designed for industrial, commercial, and OEM applications, the HMCP400X5 helps prevent damage from overloads and short circuits by providing a clear, definitive interruption when faults occur. In distribution panels and motor control centers, it acts as a critical safeguard that minimizes downtime and protects downstream equipment and wiring.

• Current rating: 400 A — suitable for main feeders and key protection points in large electrical assemblies.
• Breaker type: Circuit Breaker — designed for rapid fault interruption to maintain system integrity.
• Applications: Ideal for panelboards, switchboards, control panels, and OEM equipment where robust overcurrent protection is essential.
• System compatibility: Pairs with Eaton distribution products to support cohesive protection schemes in industrial and commercial facilities.

Who should consider the HMCP400X5? Facilities with high-current distribution needs, manufacturers integrating protective devices into OEM equipment, and service teams performing upgrades or replacements within Eaton-based systems. It’s a practical choice for main protection in motor control centers and critical load feeders where consistent performance matters.

Practical considerations and use scenarios include upgrading legacy protection in a distribution panel, configuring a reliable main breaker for a new switchgear installation, or replacing a worn-out 400 A unit in an OEM assembly. With the HMCP400X5, you get a purpose-built solution that aligns with Eaton’s protection philosophy, helping you maintain electrical safety, improve fault isolation, and keep critical processes online.