{"product_id":"siemens-3va5140-4ec31-0aa0","title":"Siemens 3VA5140-4EC31-0AA0 0A 3-Pole 3 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens \u003cstrong\u003e3VA5140-4EC31-0AA0\u003c\/strong\u003e, a purpose-built three-pole circuit breaker with an integrated potential transformer designed for robust protection and accurate metering in industrial power systems. Built by Siemens, this unit is part of the trusted 3VA family, engineered to deliver dependable performance in control panels, switchgear, and distribution boards.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 0 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 3 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 3VA5140-4EC31-0AA0\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes this device unique\u003c\/h3\u003e\n\u003cp\u003eUnlike standard breakers, this unit combines protective switching with an embedded potential transformer function in a three-pole footprint. The 0 A current rating indicates its role as a protection\/measurement element rather than a conventional load-carrying device, while the 3 V rating specifies the system context in which it operates. The three-phase configuration ensures balanced protection across all lines, and the integration with a potential transformer supports metering, relay interfacing, and monitoring directly from the device.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eThree-phase protection and metering in industrial control panels and switchgear.\u003c\/li\u003e \u003cli\u003eCompact protection solutions for panel modernization where space is at a premium.\u003c\/li\u003e \u003cli\u003eIntegrated measurement capability for accurate data to feed protection relays and energy meters.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical considerations and benefits\u003c\/h3\u003e\n\u003cp\u003eBy combining protection and measurement in a single Siemens component, installers reduce wiring complexity and panel footprint. It simplifies stocking and maintenance by staying within the Siemens protection ecosystem, which helps ensure compatibility with Siemens relays, meters, and replacement parts. When planning a project, verify that the 3 V system context and the 0 A current rating align with your protection strategy and metering requirements.\u003c\/p\u003e \u003ch3\u003eSpecifications in brief\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eCurrent rating: 0 A\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eVoltage rating: 3 V\u003c\/li\u003e \u003cli\u003ePart number: 3VA5140-4EC31-0AA0\u003c\/li\u003e \u003cli\u003eProduct family: Siemens 3VA protection and metering components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423172907170,"sku":"3VA5140-4EC31-0AA0","price":1872.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-3va5140-4ec31-0aa0-0a-3-pole-v-circuit-breaker-potential-275.webp?v=1789278665","url":"https:\/\/www.ampstate.com\/products\/siemens-3va5140-4ec31-0aa0","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}