Westinghouse HKD3400 Circuit Breaker, 400A, 3-Pole, 600V

The Westinghouse HKD3400 circuit breaker is built for demanding industrial electrical service, maintenance, and replacement projects. Designed to protect three‑phase power systems up to 600V, this 400A, 3‑pole unit delivers reliable, rapid interruption to safeguard motors, conveyors, pumps, and other heavy equipment in demanding environments.

• Amperage: 400 A
• Poles: 3
• Voltage rating: 600 V
• Manufacturer/Part number: Westinghouse HKD3400
• Purpose: Industrial service, maintenance, and replacement applications that require robust three‑phase protection

Why this model stands out for industrial users: the HKD3400 is purpose‑built to handle high‑current loads common in manufacturing floors and distribution panels, providing dependable overcurrent protection for critical three‑phase equipment. Its 400A capacity supports substantial feeders and motor circuits, helping prevent damage from overloads or short circuits while maintaining system safety and uptime.

Ideal use cases include upgrading or replacing aging breakers in service entrances, motor control centers, switchgear assemblies, and plant distribution panels. It’s well suited for facilities that run heavy machinery, HVAC systems, pumps, and automated lines where reliable trip performance and compatibility with existing Westinghouse gear are important.

Compatibility and setup notes: verify fit by part number (HKD3400) and assess your specific application requirements to ensure proper coordination with upstream protective devices and electrical codes. If you’re unsure about fit or how this unit integrates with your existing panel or ancillary equipment, send us a message and we’ll confirm compatibility and advise on the best configuration for your installation.

Practical tips for getting the most from your HKD3400:

• Cross‑check the breaker with your panel’s rated busbar arrangement and upstream protection to ensure seamless integration.
• Plan for maintenance intervals and have replacement trip units or compatible accessories on hand to minimize downtime.
• During installation, observe proper torque for terminal connections and follow all safety guidelines for high‑current devices.