{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1944-5BW41","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1944-5BW41","canonicalUrl":"https://aoctrl.com/siemens/3RT1944-5BW41","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1944-5BW41","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS magnet coil, Size S3, screw terminal, 48 V DC, for 3RT1 contactors.","salesMarkdown":"The Siemens 3RT1944-5BW41 is a SIRIUS magnet coil designed for Size S3 contactors, with a 48 V DC control supply voltage and screw-type terminals. This coil is the replacement component for the contactor's solenoid — if the coil fails on a 3RT1 S3 contactor in the field, this is the drop-in spare. The screw terminal connection matches the existing wiring scheme on the contactor base. ## Panel integration note The screw terminals accept 2x (0.5...1.5 mm²) solid or 2x (0.75...2.5 mm²) stranded — standard control wiring. No special tooling needed beyond a screwdriver.","metaTitle":"Siemens 3RT1944-5BW41 SIRIUS Magnet Coil, 48 V DC, S3","metaDescription":"Siemens SIRIUS 3RT1944-5BW41 magnet coil for Size S3 contactors, 48 V DC, screw terminal. Phased-out product; successor is SIRIUS 3RT2. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current","Product Brand Name":"SIRIUS","1 at DC rated value":"48 V","Product Designation":"Magnet coil","Type Of Voltage Of The Control Supply Voltage":"DC"}},"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=283187&mlfb=3RT1944-5BW41","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1944-5BW41/alternatives.json"},"ai":{"faq":[{"question":"What replaces 3RT1944-5BW41?","answer":"The official successor is the SIRIUS 3RT2 series coil. Verify the specific 3RT2 order code for 48 V DC and Size S3 before ordering."},{"question":"Where can I buy 3RT1944-5BW41?","answer":"This coil is sourced to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability."},{"question":"Will 3RT1944-5BW41 fit a panel wired for 3RT1016-1BB42?","answer":"No — the 3RT1016-1BB42 is a Size S00 contactor with a 24 V DC coil. The 3RT1944-5BW41 is a Size S3 coil at 48 V DC. The physical frame size and voltage are different; rewiring and a different contactor base are required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1944-5BW41","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/3RT1944-5BW41 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}}