Eaton HMCP400G5C - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton HMCP400G5C is a high-capacity molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. With a robust 400 A rating and a 600 V maximum, this three-pole unit is built to handle demanding residential, commercial, and light industrial electrical needs while integrating seamlessly with matching OEM panel hardware.

Why this breaker stands out

• Compact molded-case design maximizes panel space, helping you fit protective devices where space is at a premium without compromising performance.
• Thermal-magnetic trip unit delivers stable, repeatable protection—balancing time-delayed response for overloads with immediate action for short circuits.
• Three-pole configuration ideal for three-phase systems, providing coordinated protection across all phases in load centers and panelboards.
• 600 V rating supports higher-voltage applications common in commercial and light industrial environments.
• 400 A continuous rating suitable for protecting large feeders and substantial branch circuits, reducing the risk of nuisance trips on heavier loads.
• OEM-compatible designed to work with matching OEM load centers and panelboards, ensuring reliable performance and straightforward replacement or upgrades.

Who should consider the HMCP400G5C

This breaker is an excellent choice for professionals building or upgrading electrical infrastructure in:

• Residential service panels requiring robust protection for sizeable feeder circuits.
• Commercial electrical rooms with multi-zone panelboards and demand-heavy loads.
• Light industrial installations where three-phase circuits and higher current protection are needed.

Practical scenarios and benefits

• Main feeder protection: Use in main distribution panels to safeguard large feeders feeding subpanels, ensuring quick isolation during faults.
• Three-phase motor circuits: Protect motors and related controls in light industrial equipment where reliable trip characteristics matter for uptime and safety.
• System protection upgrades: Retrofit older panelboards with a modern, compatible HMCP400G5C to improve protection coordination and trip performance without a full panel overhaul.

Installation and care tips

• Verify compatibility with your panelboard or load center and ensure the system voltage and current levels align with 600 V and 400 A ratings.
• Follow manufacturer torque specifications for connections and use appropriate torque tools to maintain a secure, low-resistance connection.
• Plan trip coordination with adjacent protective devices to optimize fault-clearing times and minimize unnecessary outages.
• Keep documentation on model, part number (HMCP400G5C), and installation date for future troubleshooting, replacement, or upgrades.

Elevate your electrical protection with the Eaton HMCP400G5C—a purpose-built solution that combines space-conscious design, precise protection, and reliable compatibility to safeguard large circuits across residential, commercial, and light industrial applications.