Siemens 3VA5220-6ED61-0AA0 0A 2-Pole 3 V Circuit Breaker Potential Transformer

Meet the Siemens 3VA5220-6ED61-0AA0 0A 2-Pole 3 V Circuit Breaker Potential Transformer — a compact, integrated solution that combines protection and voltage sensing for streamlined panel design. Built for Siemens ecosystems, this part is designed to simplify wiring and improve reliability in space-constrained electrical assemblies.

Why this unit stands out

• Part number: 3VA5220-6ED61-0AA0 — exact replacement for compatible Siemens installations, ensuring seamless interoperability.
• 2-pole configuration — two poles provide coordinated protection and sensing across a single device, reducing panel complexity.
• Current rating: 0 A — specified for sensing/monitoring scenarios where current handling is not carried by the unit itself, aligning with protection-and-sensing applications.
• Voltage rating: 3 V — designed for low-voltage sensing circuits, enabling direct feed to relays, meters, or control systems without added transformers.
• Integrated protection and sensing — combines circuit-breaking capability with a built-in potential transformer to deliver a voltage-sense output for protective relays and metering directly from the device.

Use cases and practical benefits

• Panel optimization — ideal for control panels and switchgear where space is at a premium, since protection and voltage sensing are consolidated in one module.
• Protection relay interfaces — provides a low-voltage sensing signal (3 V) suitable for feeding protective relays or metering equipment without extra wiring or external transformers.
• System simplification — reduces the number of individual components in the cabinet by pairing a breaker with a potential transformer, cutting installation time and potential wiring errors.
• Maintenance-friendly design — a single part supports both protection and measurement pathways, simplifying diagnostics and replacements during preventive maintenance.

Ideal for

• Engineers and panel builders working within Siemens-compatible architectures
• Industrial facilities needing compact, reliable protection with voltage sensing for monitoring systems
• Retrofits or consolidations where combining functions minimizes cabinet footprint and wiring complexity

What sets it apart from alternatives

• Consolidation of two critical functions—circuit protection and voltage sensing—into a single, Siemens-rated unit, which can simplify installation and reduce point-of-use components.
• Low-voltage sensing output built directly into the device, enabling straightforward integration with relays and meters without the need for separate potential transformers.
• Clear part-number alignment (3VA5220-6ED61-0AA0) ensures compatibility with existing Siemens panels and spare-part inventories, facilitating reliable replacements and stock management.

Designed for professionals who value precise compatibility, clear operational benefits, and a streamlined footprint, the Siemens 3VA5220-6ED61-0AA0 0A 2-Pole 3 V Circuit Breaker Potential Transformer is a practical choice for modern electrical installations where protection and sensing work together efficiently. Use it in appropriate Siemens-based systems to simplify wiring, reduce cabinet clutter, and maintain accurate voltage sensing for protection relays and metering applications.