Cutler-Hammer KD3400VWS42 Circuit Breaker, 400A, 3-Pole

The Cutler-Hammer KD3400VWS42 is a rugged, industrial-grade circuit breaker designed to stand up to demanding service, maintenance, and replacement projects. Boasting a 400 A rating and a 3-pole configuration, this unit delivers reliable protection for three-phase electrical systems where uptime and safety matter most.

Key capabilities that matter in real-world installations

• 400 A amperage: High-capacity protection suitable for heavy-load feeders and critical equipment in industrial settings.
• Three-pole design: Balanced, synchronized protection for three-phase circuits, helping prevent phase imbalance and unnecessary trips.
• Part-number-based compatibility: Use KD3400VWS42 to confirm fit with your panel, bus configuration, and specific application requirements.
• Industrial-grade reliability: Built for service entrances, maintenance intervals, and replacement work within manufacturing, processing, and distribution environments.

Compatibility and verification
Verify fit by part number and application requirements to ensure seamless integration with your equipment. If you’re unsure about compatibility, our team can assist in confirming the KD3400VWS42's suitability for your exact application and panel configuration.

Ideal use cases

• Replacing aging or failed breakers in industrial panels where 400 A protection is required.
• Upgrading three-phase feeders to a high-capacity, reliable protection device.
• Maintenance shutdowns and service projects that demand dependable interruption protection and quick re-energization.

Product details

• Manufacturer: Cutler-Hammer
• Part Number: KD3400VWS42
• Product Type: Circuit Breaker
• Amperage: 400 A
• Poles: 3

Notes: Verify fit by part number and application requirements. If you need help matching a part number or confirming compatibility, message us and we’ll assist in ensuring the KD3400VWS42 is the right choice for your specific installation.