Eaton HMCP400G5W - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Eaton HMCP400G5W is a 400A, 600V, 3-pole bolt-on molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, helping maintain reliable performance in environments with vibration, cycling, or high mechanical stress.

• Secure bolt-on mounting: Provides a robust, vibration-resistant connection that stays tight through ongoing electrical and mechanical activity.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by responding to both overloads (thermal) and short circuits (magnetic) for reliable safety performance.
• OEM compatibility: Engineered to work with matching Eaton OEM load centers and panelboards for a cohesive, dependable protection system.
• Versatile applications: Suitable for residential, commercial, and light industrial environments where robust branch-circuit protection is essential.

The HMCP400G5W is purpose-built to protect your electrical system from damaging overcurrents and short circuits on large, three-phase or multi-branch circuits. With a 400A rating and 600V capability, it is well-suited for use in main distribution panels, subpanels, and service equipment where dependable, fast-acting protection is critical.

• 400A
• 600V
• 3
• Bolt-on
• Thermal-magnetic molded case circuit breaker
• Eaton
• HMCP400G5W

Who benefits most from this breaker are electrical professionals, panel builders, and service technicians who require a reliable, high-capacity protection solution that integrates smoothly with Eaton load centers. Ideal for new installations or field upgrades in panels that demand secure mounting and predictable trip performance.

Practical tips for installation and use: - Follow manufacturer torque specifications when securing the bolt-on mounting to ensure a solid bus connection. - Confirm compatibility with the existing panelboard or load center to maintain coordinated protection. - Use in environments where vibration, mechanical stress, or large fault currents are a consideration to maximize reliability.

Choose the Eaton HMCP400G5W for a proven, high-capacity, bolt-on solution that delivers consistent protection across a wide range of commercial and light industrial applications, while maintaining compatibility with Eaton’s OEM panel ecosystems.