Eaton Cutler-Hammer KM3400 400A 3P 600V Circuit Breaker | AmpState

The Eaton Cutler-Hammer KM3400 is a rugged 400 A, 3-pole, 600 V circuit breaker designed for dependable protection in panelboards, load centers, and electrical distribution networks. When your mission-critical panels operate at higher currents, KM3400 provides the precise protection fit you need without guesswork.

Key reasons to choose KM3400 for your electrical distribution setup:

• Direct part-number match—specifically listed as KM3400, making procurement straightforward for maintenance teams, panel builders, and spare inventories.
• High-current protection—400 A capacity supports demanding feeder and distribution applications in commercial or light industrial environments.
• Three-pole design—ensures coordinated protection across all phases in 3-phase electrical systems, helping maintain balanced load distribution.
• 600 V rating—suitable for a wide range of distribution circuits and industrial panels that operate at up to 600 volts.
• Versatile installation footprint—intended for use in panelboards, load centers, and broader electrical distribution, making it a reliable choice during upgrades or new installations.
• Availability through AmpState—easy sourcing for stock, with support to confirm fit and compatibility when needed.

Who benefits most from the KM3400? electrical maintenance teams, panel fabrication shops, and facilities managers who require a dependable, ready-to-deploy breaker that matches exact part numbers for faster turnaround and reduced downtime. It’s also an excellent addition to spare inventories where a precise Eaton Cutler-Hammer KM3400 replacement is anticipated.

Practical use cases include replacing a failed breaker in a 3-phase 600 V distribution panel, upgrading panel capacity in commercial spaces, or stocking spare units for quick field service in industrial settings. When in doubt about fit or compatibility, AmpState encourages you to reach out with your current panel model and configuration—they’ll help confirm whether KM3400 is the right match.

To ensure safe and compliant installation, consult the equipment’s official documentation and work with a qualified electrician. If you need help verifying compatibility or locating the correct part, message AmpState and they’ll assist with a precise match for your panel or distribution system. This KM3400 is the reliable choice when you require a trusted Eaton Cutler-Hammer solution that aligns with your 3P 600V circuit protection needs.