Siemens 3VA5340-6EF31-0AA0 Circuit Breaker, 400A, 3-Pole, 500V

Siemens 3VA5340-6EF31-0AA0 is a rugged, three-pole circuit breaker designed for demanding industrial electrical service, maintenance, and replacement projects. With a 400 A rating and a 500 V operating capability, it provides reliable overcurrent protection for three-phase power systems in manufacturing, processing, and heavy equipment environments.

• Three-pole configuration delivers balanced protection across all phases, simplifying wiring in Siemens-compatible switchgear and panels.
• 400 A continuous rating accommodates high-current feeders and motor circuits typical in industrial facilities.
• 500 V maximum voltage aligns with common industrial power distribution systems, supporting safe, reliable operation in demanding environments.
• Part-number driven compatibility verify fit by part number 3VA5340-6EF31-0AA0 against your specific application requirements to ensure proper function and mounting.
• Targeted for service, maintenance, and replacement projects, enabling seamless upgrades or replacements in existing panels without major redesigns.
• Siemens engineering and support—know you’re sourcing a device designed to work within Siemens’ ecosystem, with straightforward sourcing and documentation.
• Easy field replacement for compatible Siemens panels, helping minimize downtime and keep critical operations running smoothly.

Use cases and practical applications

• Main protection for factory switchboards and distribution panels powering conveyors, pumps, and automation gear.
• Protection solution for heavy machinery and motor control centers in manufacturing lines and processing plants.
• Retrofit or upgrade projects where a reliable, compatible Siemens breaker is required to meet current electrical codes and performance expectations.

Why this is the right choice for your project

Choosing a Siemens 3VA5340-6EF31-0AA0 circuit breaker means aligning with a trusted industrial standard. Its three-pole design ensures comprehensive phase protection, while the 400 A rating supports robust demand scenarios. The 500 V rating makes it suitable for a broad range of industrial power networks, so you can confidently protect feeders, motors, and critical loads without oversizing components or compromising safety.

Note: Verify fit by part number and application requirements before purchasing. If you need help confirming compatibility with your panel or installation, send a message and we’ll assist with a precise cross-check to ensure the device matches your system’s specifications.