Siemens 3VA6340-6HN31-0AA0 0A 3-Pole 3 V Circuit Breaker Potential Transformer

Meet the Siemens 3VA6340-6HN31-0AA0, a specialized 0 A current-rated, 3-pole circuit breaker with an integrated potential transformer. This compact module is designed for precise voltage sensing in three-phase power systems, streamlining protection and metering within a single, easy-to-install unit.

• Three-pole configuration supports full 3‑phase protection in a single module, reducing wiring complexity and panel space.
• 0 A current rating indicates the unit is intended for sensing and control circuits rather than carrying main load, making it ideal for protective relays and low-voltage measurement paths.
• Voltage rating of 3 V provides a safe, low-voltage signal suitable for accurate monitoring and metering inputs.
• Integrated potential transformer delivers reliable voltage sampling for protection relays, fault detection, and digital meters without the need for separate transformers.
• Part number specificity 3VA6340-6HN31-0AA0 ensures seamless compatibility with Siemens switchgear, panels, and replacement catalogs.
• Rugged industrial design built to withstand the demands of control rooms, distribution panels, and machine enclosures.

Use cases and scenarios

• In new or retrofit control panels where accurate voltage sensing across all three phases is required for protection relays and monitoring equipment.
• In compact switchgear installations, where integrating the transformer and breaker reduces wiring complexity and saves panel footprint.
• For OEM panel builders who need a reliable, Siemens-compatible solution that simplifies procurement and installation.

What makes this unit stand out

• Consolidates protection and sensing into one robust module, improving reliability and reducing potential wiring errors.
• Designed for seamless integration with Siemens protection and automation ecosystems, minimizing integration risk and downtime.
• Clear part identification with 3VA6340-6HN31-0AA0, aiding quick replacements and inventory management for maintenance teams.

Practical tips

• Confirm that your sensing and control circuitry accepts a 3 V input from the integrated transformer for accurate readings.
• Plan for protective relays and meters that can utilize low-voltage signals derived from the transformer for real-time monitoring.
• Keep a spare 3VA6340-6HN31-0AA0 on hand to minimize downtime during maintenance or panel upgrades.

Designed for professionals who demand precise voltage sensing, reliable protection, and streamlined installation in three-phase systems, the Siemens 3VA6340-6HN31-0AA0 0A 3-Pole 3 V Circuit Breaker Potential Transformer delivers a targeted, industrial-grade solution for modern control panels and switchgear.