Eaton HMCP400G5 - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState

Engineered by Eaton and available through AmpState, the HMCP400G5 is a 400 A, 600 V, 3-pole molded case circuit breaker designed to protect your panelboards and loadcenters from overcurrent and short circuits. Its compact form and precise protection make it a dependable choice for modern electrical distributions.

• Compact molded case design minimizes panel footprint, freeing space for additional circuits and simpler wiring layouts.
• Thermal-magnetic trip unit delivers stable, repeatable protection by balancing temperature effects with instantaneous fault current, reducing nuisance trips while responding quickly to faults.
• OEM-compatible integration is ready to pair with matching Eaton OEM loadcenters and panelboards for streamlined installation and coordinated protection strategies.
• Versatile across sectors suitable for residential, commercial, and light industrial applications, making it a flexible option for new builds and panel upgrades alike.

Technical snapshot

• Manufacturer: Eaton
• Part number: HMCP400G5
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 400 A
• Voltage rating: 600 V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

This breaker is an ideal choice for professionals upgrading panels or stocking reliable spare parts. Its robust construction and coordinated protection ensure quick restoration of service after fault conditions while keeping critical circuits safeguarded under normal operation. Whether you’re modernizing a commercial panel, outfitting a new subpanel, or maintaining an orderly, scalable electrical room, the HMCP400G5 delivers consistent performance when it matters most.