{"product_id":"siemens-3va5125-4ec31-0aa0","title":"Siemens 3VA5125-4EC31-0AA0 0A 3-Pole 3 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens 3VA5125-4EC31-0AA0, a purpose-built 3-pole protection and voltage-sensing device designed for modern 3-phase power systems. This unit combines a circuit breaker with an integrated potential transformer, delivering reliable protection and accurate voltage monitoring in a single, compact module.\u003c\/p\u003e \u003cp\u003eKey capabilities and what they mean for you:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration:\u003c\/strong\u003e Ideal for three-phase circuits, ensuring synchronized protection across all phases in motor control centers, switchgear, and distribution panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIntegrated potential transformer:\u003c\/strong\u003e Provides safe, isolated voltage sensing for relays, metering, and control circuits without extra wiring or external transformers.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating: 0 A\u003c\/strong\u003e and \u003cstrong\u003eVoltage rating: 3 V\u003c\/strong\u003e as specified, reflecting its role in sensing and protection logic rather than carrying heavy load current.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSiemens build quality:\u003c\/strong\u003e Engineered to integrate seamlessly with Siemens protection and automation ecosystems, reducing compatibility concerns and installation time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, panel-ready design:\u003c\/strong\u003e A streamlined unit that fits efficiently in control panels, minimizing space while maximizing protection and monitoring functionality.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eReal-world use cases:\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePanel builders and maintenance engineers installing three-phase protection schemes in industrial facilities.\u003c\/li\u003e \u003cli\u003eSystems requiring dependable voltage monitoring for protective relays, metering modules, or PLC-based supervision without running separate transformer wiring.\u003c\/li\u003e \u003cli\u003eUpgrading legacy panels to a unified protection-and-sensing solution that simplifies wiring, reduces fault points, and improves diagnostic visibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose this Siemens device over separate components? It consolidates protection and voltage sensing into one robust module, cutting down on cabling complexity, space consumption, and potential miswiring. The result is faster installation, easier diagnostics, and a cleaner control panel you can rely on in demanding environments.\u003c\/p\u003e \u003cp\u003ePractical tips for deployment:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eConfirm compatibility with your Siemens protection relays and automation hardware to ensure seamless signaling from the integrated potential transformer.\u003c\/li\u003e \u003cli\u003ePlan wiring to leverage the 3 V sensing path without introducing voltage drops that could affect protection relays.\u003c\/li\u003e \u003cli\u003eFollow Siemens installation guidelines for torque and terminal connections, and keep spare units on hand for quick maintenance of critical power systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eStock-keeping and procurement notes: Part number 3VA5125-4EC31-0AA0, 3-pole, 0 A current rating, 3 V voltage rating, designed for industrial environments and aligned with Siemens protection and control ecosystems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423173431458,"sku":"3VA5125-4EC31-0AA0","price":1748.0,"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-3va5125-4ec31-0aa0","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}