Siemens 3VA6340-8JQ31-0AA0 Circuit Breaker, 400A, 3-Pole, 600V

Meet the Siemens 3VA6340-8JQ31-0AA0 Circuit Breaker — a robust, industrial-grade solution designed to protect and control high-demand electrical systems. Built for reliability in maintenance, service, and replacement projects, this 3-pole unit delivers solid performance in demanding environments where uptime and safety matter.

Key advantages at a glance:

• 400 A rating provides strong protection for main feeders and large equipment in three-phase systems.
• 3-pole configuration supports balanced protection across all phases, helping prevent phase imbalances and equipment damage.
• 600 V maximum operating voltage suits a wide range of industrial distribution panels, motor circuits, and power feeds.
• Part-number accuracy use the exact model 3VA6340-8JQ31-0AA0 to confirm compatibility with your application requirements.
• Industrial-grade build engineered for frequent maintenance cycles and replacement scenarios common in factories, processing plants, and large facilities.

Who is this ideal for?

• Facility managers overseeing powered industrial plants and manufacturing lines who need dependable, compatible circuit protection.
• Electrical engineers conducting panel upgrades, retrofits, or equipment replacement projects.
• Maintenance teams seeking a ready-to-install breaker that matches existing Siemens equipment.

Use cases and practical scenarios

• Replacing an outdated or failed main breaker in a three-phase distribution panel.
• Upgrading feeder protection for high-load motors and conveyors in manufacturing settings.
• Integrating a compatible Siemens unit into new installations where a 400 A, 3-pole, 600 V breaker is required.

Compatibility and installation notes

• Verify fit by cross-checking the part number 3VA6340-8JQ31-0AA0 with your application requirements before purchase.
• Professional installation is recommended to ensure proper mounting, electrical connections, and safety compliance.
• Confirm panel and busbar compatibility with the provided part number to avoid fitment issues during replacement or retrofits.

Specifications at a glance

• Manufacturer: Siemens
• Part Number: 3VA6340-8JQ31-0AA0
• Product Type: Circuit Breaker
• Amperage: 400 A
• Poles: 3
• Voltage: 600 V

If you’re unsure about compatibility or need guidance to match this part with your exact panel model or application, send us a message — we’re ready to help confirm the fit and get you the right Siemens breaker for your project.