{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1944-5BG41","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1944-5BG41","canonicalUrl":"https://aoctrl.com/siemens/3RT1944-5BG41","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1944-5BG41","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, magnet coil for contactors, Size S3, screw terminal, 125 V DC.","salesMarkdown":"The Siemens 3RT1944-5BG41 is a replacement magnet coil for SIRIUS Size S3 contactors, rated for 125 V DC control supply voltage with screw-type terminals. Siemens lists this coil as a phased-out product. The official successor is the SIRIUS 3RT2 series — if you're maintaining an existing panel, the 3RT1944-5BG41 remains the drop-in fit for the Size S3 contactor frame; a BOM change to the 3RT2 family requires verifying the mounting footprint and terminal arrangement. The coil mounts directly onto SIRIUS Size S3 contactors (e.g., the 3RT1044 frame). Screw terminals accept 2x (0.5... 1.5 mm²) solid or 2x (0.75... 2.5 mm²) stranded — standard control wiring. The 125 V DC coil rating means it pulls in reliably on a nominal 125 VDC control bus; verify your supply stays within the pickup and hold range for DC solenoids.","metaTitle":"Siemens 3RT1944-5BG41 SIRIUS Magnet Coil, 125 V DC, Size S3","metaDescription":"Siemens SIRIUS 3RT1944-5BG41 magnet coil for Size S3 contactors, 125 V DC with screw terminals. Phased-out product; successor is SIRIUS 3RT2 series. 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":"125 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=375596&mlfb=3RT1944-5BG41","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1944-5BG41/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1944-5BG41?","answer":"We source and quote it to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the control voltage for 3RT1944-5BG41?","answer":"125 V DC, with screw terminals for the control circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1944-5BG41","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/3RT1944-5BG41 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}}