Westinghouse KD-3400-SKW Circuit Breaker, 400A, 3-Pole, 600V

The Westinghouse KD-3400-SKW Circuit Breaker is a rugged, industrial-grade protection device built to safeguard demanding electrical systems. With a 400 A rating, 3 poles, and a 600 V capability, this breaker is engineered for reliability in service, maintenance, and replacement projects where uptime and safety matter.

Key specifications

• Amperage: 400 A
• Poles: 3
• Voltage: 600V
• Part Number: KD-3400-SKW
• Manufacturer: Westinghouse
• Application: industrial electrical service, maintenance, and replacement projects

What makes the KD-3400-SKW stand out

Designed for heavy-duty industrial environments, this three-pole breaker provides robust protection for three-phase circuits, helping to isolate faults quickly and minimize downtime. The KD-3400-SKW integrates smoothly into standard industrial panels where a 400 A, 3-pole, 600 V solution is required, delivering consistent performance in demanding applications such as motor feeders, large equipment lines, and distribution feeds.

• purpose-built to handle high-current three-phase protection with dependable operation.
• Clear compatibility signal: the KD-3400-SKW part number ensures you’re selecting the exact Westinghouse model designed for compatible panels and setups.
• Efficient maintenance and replacement: ideal for when you need to upgrade or replace an aging breaker to restore critical processes quickly.

Ideal use cases

• Protecting three-phase motors and feeders in manufacturing lines
• Serving as a main or feeder breaker in industrial distribution panels
• Replacement part for service upgrades or downtime-critical maintenance projects
• Protection for heavy electrical equipment in facilities that require reliable 600V operation

Compatibility and installation guidance

Note: Verify fit by part number and application requirements. The KD-3400-SKW is intended for industrial electrical service, maintenance, and replacement scenarios where a 400 A, 3-pole, 600 V breaker is appropriate. If you’re unsure about fit or compatibility, message us and we’ll help confirm whether this part matches your panel and system needs.

Practical tips for installation and care

• Confirm panel compatibility by cross-checking the KD-3400-SKW part number with your enclosure’s specifications.
• Inspect mounting and bus connections to ensure secure, proper alignment of the 3-pole contacts.
• Schedule periodic checks as part of your preventive maintenance program to verify electrical integrity and avoid unexpected outages.
• Store spare units in a clean, dry environment to preserve performance when replacements are needed.