Siemens 3VA5120-4EC31-0AA0 0A 3-Pole 3 V Circuit Breaker Potential Transformer

< p>Introducing the Siemens 3VA5120-4EC31-0AA0, a purpose-built three-pole 3-volt circuit breaker potential transformer designed to integrally support protection and metering within Siemens electrical gear. This specific variant is configured for three-phase voltage sensing across all poles, delivering the reliable signals protection relays rely on to coordinate fast, accurate tripping in fault scenarios. The current rating is specified as 0 A for this part instance, making it a precise, application-specific component within the Siemens 3VA ecosystem. < /p>

• Part number: 3VA5120-4EC31-0AA0
• Poles: 3
• Voltage rating: 3 V
• Current rating: 0 A

Why this Siemens potential transformer stands out

Unlike generic voltage sensing options, this transformer is purpose-built to slot into Siemens protection configurations, ensuring seamless compatibility with the 3VA protection and control family. Its 3-pole design guarantees synchronized voltage sensing across all phases, which is essential for accurate relay operation and stable protection trapezoids in demanding electrical environments. With a compact form factor and Siemens-engineered tolerances, you can expect dependable performance in panelboard assemblies, switchgear banks, and retrofit projects that demand exacting PT ratios and phase alignment.

Ideal use cases

• Replacement or spare for Siemens 3VA-based protection schemes in industrial or commercial power systems.
• Part of preventive maintenance routines to minimize downtime in critical infrastructure where accurate voltage sensing matters.
• Applied in retrofit projects to maintain compatibility with existing Siemens metering and protection relays requiring a 3 V, three-pole sensing element.

Practical considerations and integration tips

When planning integration, verify that the system’s protection strategy calls for a three-pole, 3 V potential transformer with the specific part number 3VA5120-4EC31-0AA0. Its design supports straightforward wiring within Siemens protection panels, helping to reduce wiring complexity and potential signal errors. This transformer is optimized for reliable operation within standard Siemens low-voltage switchgear environments, contributing to precise fault detection and improved overall system reliability.

Specifications at a glance

• Part number: 3VA5120-4EC31-0AA0
• Poles: 3
• Voltage rating: 3 V
• Current rating: 0 A

For engineers building or maintaining Siemens-based protection architectures, this 3-pole, 3 V circuit breaker potential transformer offers a precise, compatible solution that supports accurate protection signaling, streamlined installation, and dependable performance in critical electrical networks.