Eaton Cutler-Hammer KES3400LS 400A 3P 600V Circuit Breaker | AmpState

Introducing the Eaton Cutler-Hammer KES3400LS 400A 3-Pole 600V Circuit Breaker—designed to deliver dependable overcurrent protection for panelboards, load centers, and electrical distribution networks.

Built for everyday electrical work, this 3-pole circuit breaker handles high-demand feeder circuits with a robust 400 A rating and a 600V operating capability. Its design supports reliable performance in both retrofit projects and ongoing maintenance, especially when the part number must remain consistent across installations.

• Amperage: 400 A
• Poles: 3
• Voltage: 600V
• Manufacturer: Eaton Cutler-Hammer
• Part Number: KES3400LS

Why this KES3400LS stands out for professional maintenance and retrofit work is its emphasis on compatibility and reliability. The part-number consistency simplifies sourcing and stock management across multiple panels, reducing downtime and guesswork during upgrades or replacements. With proven protection for essential circuits, it minimizes nuisance trips and safeguards electrical distribution in commercial and light industrial environments.

Ideal use cases include retrofit installations where large feeders require a 400 A, 3-pole breaker, and maintenance projects that rely on a standardized part number to streamline ordering and installation. It’s well-suited for panelboards and load centers that power demanding equipment, climate control systems, and other critical loads at 600V.

If you’re unsure about fit or compatibility, AmpState is ready to help verify that the KES3400LS matches your panel configuration and bus connections. Send a quick inquiry, and the team will confirm the best match for your setup.

Choose the Eaton Cutler-Hammer KES3400LS 400A 3P 600V circuit breaker for durable, high-capacity protection that aligns with professional maintenance workflows and retrofit projects. It’s a practical, reliable solution for safeguarding your electrical distribution with confidence.