Siemens 3VA6340-0HN31-0AA0 400A 3P 600V Circuit Breaker | AmpState

The Siemens 3VA6340-0HN31-0AA0 is a robust circuit breaker designed to protect essential electrical distribution paths in panelboards, load centers, and similar infrastructure. With a 400 A rating, 3 poles, and a 600 V maximum, this unit delivers reliable, three-phase overcurrent protection where it matters most in industrial and commercial settings.

Designed for retrofit work and maintenance planning, this exact part number helps you keep documentation, spares, and field service consistent across facilities. When part-number fidelity is important—such as in multi-site deployments or legacy installations—the Siemens 3VA6340-0HN31-0AA0 ensures you’re always sourcing the right device without guesswork.

Key details at a glance

• Manufacturer: Siemens
• Part Number: 3VA6340-0HN31-0AA0
• Product Type: Circuit Breaker
• Amperage: 400 A
• Poles: 3
• Voltage: 600 V
• Applications: Panelboards, load centers, and electrical distribution systems

What makes this breaker stand out

• OEM consistency for retrofits – keep exact part numbers across installations to simplify ordering, stocking, and maintenance planning.
• Solid three-phase protection – 3-pole configuration is ideal for distributed three-phase circuits common in commercial and industrial environments.
• High-current readiness – 400 A capacity supports substantial feeder loads and main distribution paths without compromising protection.
• Broad compatibility – 600 V rating fits a wide range of industrial equipment and panelboard architectures.
• Expert compatibility support – AmpState can assist with part-number matching and fit confirmation to minimize downtime and uncertainty.

Who this is for: facilities managers, electrical contractors, and procurement teams responsible for reliable, scalable electrical distribution in manufacturing facilities, office campuses, data centers, and other buildings where uptime is critical.

Practical use scenarios include planned replacements in aging Siemens panelboards, upgrades that require a consistent Siemens part-numbering approach, and emergency spares that keep maintenance windows short. If you’re unsure about compatibility or fit, message us—AmpState is ready to help confirm the right match for your panelboard or load center.