Eaton HMCP400F5C - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton HMCP400F5C is a 400 A, 600 V, 3-pole molded-case circuit breaker engineered to protect panelboards and loadcenters from overcurrent and short-circuit events. Designed for reliable performance in residential, commercial, and light industrial environments, this unit combines compact sizing with robust protection for critical electrical circuits.

Key advantages that distinguish the HMCP400F5C

• Compact molded-case design saves panel space and supports efficient wiring layouts, helping you fit more circuits into the same panel without compromising protection.
• Thermal-magnetic trip unit delivers stable, repeatable protection by pairing a thermal element (overload) with a magnetic mechanism (short-circuit), reducing nuisance trips and responding swiftly to high fault currents.
• OEM-compatible for seamless integration with matching Eaton loadcenters and panelboards, ensuring consistent trip characteristics and straightforward replacement in existing installations.
• Three-pole configuration provides true three-phase protection, ideal for commercial and light industrial electrical systems where balanced phase protection is essential.

Specifications at a glance

• Amperage Rating: 400 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Type: Thermal-magnetic molded case circuit breaker
• Part Number: HMCP400F5C
• Manufacturer: Eaton
• Application: Branch circuit overcurrent and short-circuit protection

Ideal applications and use cases

Use the HMCP400F5C in panelboards and loadcenters where a reliable 3-phase protection solution is required. It’s well-suited for:

• Commercial wiring behind distribution panels in offices, retail spaces, and service areas
• Light industrial equipment feeders and machinery enclosures
• New installations or retrofit projects where OEM-compatible breakers ensure consistent performance

Practical considerations and installation tips

• Ensure physical and electrical compatibility with your Eaton OEM loadcenter or panelboard to maintain aligned trip curves and terminal layouts.
• Follow local electrical codes and standards during installation, commissioning, and maintenance.
• Plan for future expansion by selecting a breaker design that preserves available panel space and maintains organized wiring routes.

With the Eaton HMCP400F5C, you gain a dependable, space-efficient, three-pole protection solution that delivers precise overcurrent and short-circuit protection for a wide range of residential, commercial, and light industrial applications. Built for consistent performance and easy integration, this breaker is a solid choice for panels where reliability and compatibility matter most.