Siemens 3VA5120-5ED31-0AA0 0A 3-Pole 3 V Circuit Breaker Potential Transformer

Introducing the Siemens 3VA5120-5ED31-0AA0, a compact 3-pole device designed for precise protection and measurement tasks in low-voltage environments. This Siemens Circuit Breaker Potential Transformer combines robust circuit protection with a dedicated potential-transformer interface, delivering reliable performance in demanding control panels. With a current rating of 0 A, three poles, and a 3 V rating, this part is tailored for specialized protection schemes in industrial applications.

Key advantages

• Three-pole configuration ensures balanced protection across all phases, supporting coordinated protection in multi-phase power systems.
• 3 V rating provides a compact, low-voltage sensing interface essential for accurate protection relay signaling.
• Integrated transformer functionality reduces component count and wiring, simplifying panel layouts and speeding up installation.
• Siemens reliability backed by global support and compatibility with Siemens protection and control ecosystems.

Ideal use cases

• Panel builders and OEMs designing compact control enclosures for industrial environments.
• Retrofits and replacements where a specified Siemens part is required for continuity and compatibility.
• Protection and metering setups in low-voltage distributions that benefit from an integrated potential-transformer interface.

Why this matters for your project

Leveraging a single unit that combines protection and measurement can reduce mounting space, wiring complexity, and setup time. The 3VA5120-5ED31-0AA0 helps you streamline installations, speed commissioning, and maintain consistent performance for equipment relying on precise sensing signals.

Specifications

• Current rating: 0 A
• Poles: 3
• Voltage rating: 3 V
• Part number: 3VA5120-5ED31-0AA0