Westinghouse | DA3400 | Circuit Breaker | 400A | 240V | 22kA | Bolt-On

Meet the Westinghouse DA3400 Circuit Breaker—a rugged 400A, 240V bolt-on solution engineered for reliability in the most demanding electrical environments. Designed for maintenance, retrofit, and replacement projects where exact specifications matter, this breaker helps safeguard your panel while you upgrade or service critical circuits.

• Amperage: 400A
• Voltage: 240V
• Interrupting rating: 22kA
• Bolt-On
• Part number: DA3400
• Best use cases: maintenance, retrofit, and replacement where matching specs are required
• Ordering note: Confirm fit and ratings before ordering; the part number is the best reference for compatibility

Why choose the Westinghouse DA3400?

This DA3400 model offers a clear, purpose-built solution for systems that demand solid fault protection and straightforward replacement. The bolt-on design simplifies installation in compatible panels, reducing downtime during critical maintenance or when retrofitting to meet updated electrical requirements. With a 22kA interrupting capacity, it provides dependable protection against high-energy faults, helping to limit damage and support safer operation.

Ideal use scenarios

• Replacing an identical 400A, 240V circuit breaker in existing panels where precise specs are required
• Retrofits to upgrade or restore circuit protection in facilities undergoing electrical modernization
• Maintenance replacements to restore reliability after panel servicing or component wear

Practical guidance

Before purchasing, reference the DA3400 part number to verify compatibility with your panel and ensure the mounting style aligns with your enclosure. Use this model as a dependable, specification-matched replacement that minimizes guesswork and helps maintain consistent electrical protection across your distribution system.