Siemens 3VA6340-5HN31-0AA0 Circuit Breaker, 400A, 3-Pole, 600V

Introducing the Siemens 3VA6340-5HN31-0AA0 Circuit Breaker—a rugged three-pole protection device built for industrial electrical service, maintenance, and replacement projects. As part of the trusted Rating 3VA6 family, this 400 A, 600 V breaker delivers reliable overcurrent protection for demanding three-phase systems in manufacturing floors, facilities, and service panels.

Key specifications

• Part Number: 3VA6340-5HN31-0AA0
• Manufacturer: Siemens
• Series: Rating 3VA6
• Product Type: Circuit Breaker
• Amperage: 400 A
• Poles: 3
• Voltage: 600 V

Why this Siemens 3VA6340-5HN31-0AA0 stands out

• Designed for industrial three-phase distribution, providing consistent protection across all three feeders in 600 V networks.
• Part of the 3VA6 series, which aligns with Siemens panels and replacement parts for streamlined maintenance and upgrades.
• High-current capability of 400 A makes it a practical choice for feeders and service entrances in mid-to-large scale facilities.
• Clear part-number based compatibility focus helps ensure you’re selecting the exact device you need for your application.

Ideal use cases

• Replacing a failed breaker in industrial facilities, warehouses, or manufacturing lines.
• Retrofits and upgrades within existing Siemens panel installations to meet current protection requirements.
• Spare-part readiness for maintenance programs that demand reliable, immediately available 3-phase protection.
• Three-phase distribution protection for large equipment, motors, and critical loads in 600 V networks.

Compatibility and installation notes

Verify fit by part number and assess your application requirements. The exact part number 3VA6340-5HN31-0AA0 should match the panel configuration, current rating, and the three-pole 600 V specification of your system.

If you need help matching a part number or confirming compatibility with your equipment, message us and we’ll help ensure you get the right device for your project.

Practical considerations for installation and maintenance

• Confirm that your distribution network operates at 600 V and that a 400 A, 3-pole device aligns with your feeder requirements.
• Have a qualified electrician perform the installation, following all applicable electrical codes and safety standards.
• Keep this part on hand as a reliable spare for planned maintenance or unexpected downtime to minimize disruption.