Siemens 3VA6340-7HN31-0AA0 Circuit Breaker, 400A, 3-Pole, 600V

Siemens 3VA6340-7HN31-0AA0 is a rugged, industrial-grade circuit breaker designed to protect complex power systems in service, maintenance, and replacement projects. With a 3-pole configuration rated for 400 A and capable of handling up to 600 V, this device delivers reliable overcurrent protection for 3-phase electrical distribution in demanding environments. Use the exact part number 3VA6340-7HN31-0AA0 to confirm compatibility with your application and panel specifications.

Key specifications

• Amperage: 400 A
• Poles: 3
• Voltage: 600 V
• Manufacturer: Siemens
• Part Number: 3VA6340-7HN31-0AA0

What makes this breaker essential

• Certified industrial protection: engineered to interrupt fault currents in three-phase power systems, helping safeguard equipment and personnel in manufacturing, processing, and heavy industry environments.
• Reliable Siemens build quality: backed by Siemens engineering and global service support, ensuring dependable operation and a long service life in demanding conditions.
• Clear compatibility cue. the exact part number 3VA6340-7HN31-0AA0 provides a straightforward way to verify fit for your specific panel and electrical architecture.

Ideal use cases

• Replacement and upgrade of aging 3-phase protection in industrial panels and motor feeders
• Service and maintenance projects where 600 V class protection is required
• New installations in systems that require a robust 3-pole, 400 A solution for critical loads

Compatibility and installation tips

• Always verify fit by cross-checking the part number (3VA6340-7HN31-0AA0) against your application requirements and panel specifications.
• Ensure the system is a 3-phase configuration compatible with a 600 V distribution environment.
• Plan for coordinated protection with downstream devices and follow wiring and mounting guidelines from Siemens documentation for the 3VA series.

Why choose Siemens 3VA6340-7HN31-0AA0

When reliability and precision matter, Siemens delivers. This 3VA6340-7HN31-0AA0 breaker combines strong dimensional stability, predictable tripping behavior, and ease of integration into established Siemens protection schemes. For facilities investing in uptime, having a clearly identifiable, compatible 400 A, 3-pole, 600 V circuit breaker helps streamline maintenance planning, reduce downtime, and simplify future spares management.