{"product_id":"siemens-3va5120-6ec31-0aa0","title":"Siemens 3VA5120-6EC31-0AA0 0A 3-Pole 3 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens \u003cstrong\u003e3VA5120-6EC31-0AA0\u003c\/strong\u003e, a purpose-built 3-pole protection and measurement device that blends circuit-breaking capability with a built-in potential transformer. Designed for three-phase systems, this compact unit delivers essential voltage sensing directly from the breaker, enabling seamless relay inputs and accurate metering without the need for separate transformers.\u003c\/p\u003e \u003ch3\u003eWhy this 3-pole unit stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration:\u003c\/strong\u003e Optimized for balanced protection across all three phases in industrial power distribution.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIntegrated potential transformer:\u003c\/strong\u003e Provides the necessary voltage sensing for protective relays and metering, reducing wiring complexity and panel clutter.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLow-voltage sensing output:\u003c\/strong\u003e 3 V secondary support aligns with common protection schemes and relay inputs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart identification:\u003c\/strong\u003e Clear part number \u003cem\u003e3VA5120-6EC31-0AA0\u003c\/em\u003e ensures easy sourcing and compatibility within Siemens systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpec alignment:\u003c\/strong\u003e Current rating listed as 0 A with a 3 V sensing capability, suitable for integrated protection applications rather than sole current carrying.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003ePerfect for installation in 3-phase power panels, distribution boards, and motor control centers where space is at a premium and reliable voltage sensing is required. It’s particularly well-suited for protection schemes that rely on a compact, single-unit solution to provide both breaker action and voltage feedback to protective relays and metering equipment.\u003c\/p\u003e \u003ch3\u003eKey benefits in practice\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eWiring efficiency:\u003c\/strong\u003e Eliminates the need for separate potential transformers, simplifying the routing and connection of protection relays.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInstaller-friendly:\u003c\/strong\u003e Streamlines panel assembly by combining protection and sensing in one module.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTraceability and serviceability:\u003c\/strong\u003e The Siemens part number supports straightforward replacement and compatibility checks within legacy and modern protection architectures.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePart number:\u003c\/strong\u003e 3VA5120-6EC31-0AA0\u003cbr\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003cbr\u003e\n\u003cstrong\u003eVoltage rating (secondary):\u003c\/strong\u003e 3 V\u003cbr\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 0 A\u003c\/p\u003e \u003ch3\u003ePractical tips for deployment\u003c\/h3\u003e\n\u003cp\u003eWhen integrating this unit, verify that the 3 V potential transformer output is compatible with your relay inputs and metering devices. Use it in applications where a compact, dual-function protection and sensing solution reduces wiring complexity while maintaining reliable three-phase protection. Always follow your institution’s safety standards and Siemens installation guidelines to ensure proper mounting, connection, and maintenance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423173562530,"sku":"3VA5120-6EC31-0AA0","price":2640.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/siemens-3va5120-6ec31-0aa0","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}