Eaton CHKD3400T57WPN 400A 3-Pole 600 V Circuit Breaker

The Eaton CHKD3400T57WPN is a robust 400 A, 3-pole circuit breaker designed to protect demanding three-phase electrical systems up to 600 V. Built with Eaton’s engineering precision, this unit delivers reliable interruption when faults occur, helping to safeguard power distribution, motor loads, and critical equipment in industrial and commercial environments. If you’re upgrading a panel or stocking spare parts for a high-capacity installation, the CHKD3400T57WPN is a purpose-built choice that aligns with professional electrical standards and Eaton’s legacy of dependable protection.

Key specifications at a glance

• Current rating: 400 A
• Poles: 3
• Voltage rating: 600 V
• Part number: CHKD3400T57WPN

Three-pole protection for three-phase systems

Designed for three-phase power distribution, the Eaton CHKD3400T57WPN provides synchronized interruption across all poles, minimizing the risk of unbalanced faults and ensuring consistent protection for motors, feeders, and commercial/industrial equipment. Its 600 V rating makes it suitable for a wide range of industrial power networks, while the 400 A capacity handles substantial load requirements without sacrificing safety or reliability.

Ideal applications

• Main feeders and service-disconnect scenarios in industrial facilities
• Motor control centers and large-capacity distribution panels
• Commercial spaces with heavy equipment and compressed-air systems, pumps, and conveyors
• Replacement or upgrade path for legacy Eaton installations requiring exact part traceability

What sets the Eaton CHKD3400T57WPN apart

• The CHKD3400T57WPN part number identifies a precise 400 A, 3-pole, 600 V solution, helping reduce compatibility concerns during procurement and maintenance.
• Three-phase integrity: A dedicated 3-pole design maintains coordinated protection across all phases, improving fault isolation and system safety in complex power networks.
• Trustworthy Eaton engineering: Built on Eaton’s decades of electrical protection experience, this breaker is designed to perform reliably in demanding environments where uptime matters.

Practical guidance for installation and care

Before installing or replacing, verify that the panel or enclosure supports a 400 A, 3-pole, 600 V configuration and that mounting and termination provisions align with your Eaton ecosystem. Follow local electrical codes and the manufacturer’s installation instructions to ensure proper alignment, secure terminations, and safe handling. For ongoing performance, perform routine inspections of connections and enclosure integrity as part of your preventive maintenance plan.