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

Eaton HMCP400W5W Circuit Breaker delivers reliable overload and fault protection for demanding electrical systems. With a robust 400A rating, 3-pole configuration, and 600V capacity, this bolt-on breaker is purpose-built for retrofit, maintenance, and replacement projects where exact specifications are essential.

Key specifications at a glance

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Mounting: Bolt-On
• Part reference: HMCP400W5W

Why this breaker is a smart choice

Designed for professional maintenance and retrofit work, the HMCP400W5W ensures you maintain the exact protection levels your system requires. The bolt-on mounting provides a secure, vibration-resistant connection—ideal for industrial environments and panelboards where reliability can’t be compromised. Rely on the same Eaton engineering lineage that supports continuity of service in critical power distribution setups.

Ideal use cases

• Retrofit projects to upgrade or restore protection in existing Eaton panels or compatible systems
• Replacement for a failed 400A, 3-pole, 600V circuit breaker in service entrances and distribution panels
• Maintenance planning for industrial facilities where precise amperage and voltage ratings are required

What problems this breaker solves

• Provides a clear, defined protection boundary for circuits carrying up to 400A
• Ensures reliable tripping behavior in 600V distribution networks, helping prevent equipment damage
• Supports quick field replacement with a matching part number reference to minimize downtime

Fit, compatibility, and practical tips

• Always confirm fit and ratings before ordering. The HMCP400W5W part number is the best reference for compatibility with your panel or enclosure
• Use in bolt-on mounting configurations to ensure a secure, durable connection in demanding environments
• When planning a retrofit or replacement, verify that the existing panel supports a 400A, 3-pole, 600V breaker of bolt-on design
• Follow manufacturer instructions for installation and torque guidelines to maintain safe, reliable operation

Choosing Eaton over generic options

Unlike generic substitutes, this breaker is built to align with Eaton’s engineering standards and the specific mounting and electrical characteristics of compatible panels. The bolt-on design offers a sturdier attachment in locations subject to vibration or frequent panel access, while the 400A/3-pole/600V ratings match high-demand distribution needs without overcomplicating the upgrade path.

Take action with the Eaton HMCP400W5W when you need a precise, compatible solution for maintenance, retrofit, or replacement within your 400A, 3-pole, 600V circuit protection strategy.