{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1945-5AJ11","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1945-5AJ11","canonicalUrl":"https://aoctrl.com/siemens/3RT1945-5AJ11","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1945-5AJ11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RT1945-5AJ11, contactor coil, 0.27 kg, current lifecycle stage, for 3RT series contactors.","salesMarkdown":"The Siemens 3RT1945-5AJ11 is a replacement coil for the 3RT series contactors. It's the part you swap when the coil burns out or the contactor gets a new control voltage. Listed at 0.27 kg, it's a straightforward swap-in — pull the old coil, clip in this one, torque the terminals, and the contactor's back on the line. ## What the weight tells you At 0.27 kg, this coil is sized for the 3RT frame. That's a shipping and handling number, not a selection parameter — but it does tell you the magnetic core and winding mass are consistent with the 3RT contactor's pull-in force curve. If you're swapping coils in a panel, the weight confirms it's the right physical size for the contactor base. ## Category note This is a contactor coil, not a filter choke. Search under Contactors, not Inductors.","metaTitle":"Siemens 3RT1945-5AJ11 Contactor Coil, Current Lifecycle","metaDescription":"Siemens 3RT1945-5AJ11 replacement coil for 3RT contactors. Current lifecycle stage, 0.27 kg weight. Sourced and quoted to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Part #":"3RT1945-5AJ11","Weight":"0.27 kgs","Category":"Inductors","Sub Category":"Inductors, Chokes, & Coils","Top Category":"Electronic Parts and Devices","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$237.91","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1945-5AJ11/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT1945-5AJ11?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1945-5AJ11","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RT1945-5AJ11 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}