{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1945-5AP61","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1945-5AP61","canonicalUrl":"https://aoctrl.com/siemens/3RT1945-5AP61","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1945-5AP61","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS magnet coil, Size S3, screw terminal, 220 V AC 50 Hz / 240 V 60 Hz, order code 3RT1945-5AP61.","salesMarkdown":"The Siemens SIRIUS 3RT1945-5AP61 is a magnet coil for Size S3 contactors, designed for screw terminal connection and rated 220 V AC at 50 Hz or 240 V at 60 Hz. This is a phased-out product; the official successor is the SIRIUS 3RT2 series. The manufacturer's designated replacement is the SIRIUS 3RT2 line. Mounts directly onto SIRIUS Size S3 contactors via screw terminals. The 220 V AC / 240 V AC dual-frequency rating covers 50 Hz and 60 Hz mains without modification — a practical detail for panels that might ship to both 50 Hz and 60 Hz sites. No special tooling needed; the coil swaps in the field with the contactor de-energized.","metaTitle":"Siemens 3RT1945-5AP61 SIRIUS Magnet Coil, 220/240 VAC, Phase","metaDescription":"Siemens SIRIUS 3RT1945-5AP61 magnet coil for Size S3 contactors, 220 VAC 50 Hz / 240 V 60 Hz, screw terminal. Phased-out product; successor is SIRIUS 3RT2. Sourced to order against","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current","Product Brand Name":"SIRIUS","Product Designation":"Magnet coil"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=429887&mlfb=3RT1945-5AP61","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1945-5AP61/alternatives.json"},"ai":{"faq":[{"question":"What replaces 3RT1945-5AP61?","answer":"The official successor is the SIRIUS 3RT2 series. This is a direct replacement from Siemens for the Size S3 contactor magnet coil function."},{"question":"Where can I buy 3RT1945-5AP61?","answer":"This phased-out coil is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What voltage does 3RT1945-5AP61 run on?","answer":"Rated 220 V AC at 50 Hz or 240 V at 60 Hz. Screw terminal connection for Size S3 SIRIUS contactors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1945-5AP61","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/3RT1945-5AP61 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}}