Eaton HMCP400W5W - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Eaton HMCP400W5W is a 400 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built by Eaton, this unit combines rugged construction with precise protection to keep electrical systems safe and running smoothly.

Why this breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays locked in place even in demanding environments.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance—fast enough to interrupt dangerous faults, yet reliable under normal operating conditions.
• OEM panel compatibility is designed to pair with matching Eaton loadcenters and panelboards for seamless integration and consistent protection coordination.
• Versatile for multiple sectors suitable for residential, commercial, and light industrial installations where high current protection is required.
• High current capability 400 A at 600 V to safeguard large feeders and critical circuits without compromising performance.

Technical snapshot

• Manufacturer: Eaton
• Part number: HMCP400W5W
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 400 A
• Voltage rating: 600 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Panelboard upgrades in residential buildings, commercial facilities, and light industrial setups that demand robust, high-current protection.
• Applications requiring dependable coordination with OEM Eaton loadcenters and panelboards to maintain protective performance and electrical compatibility.
• Environments with vibration or heavy-duty usage where a secure bolt-on connection helps prevent connection loosening over time.

With the HMCP400W5W, you get a purpose-built solution that addresses real-world protection needs: fast fault interruption, reliable long-term operation, and straightforward integration into existing electrical distributions. This is protection you can trust when it matters most—delivered by Eaton and available through AmpState.