{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1944-5AN21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1944-5AN21","canonicalUrl":"https://aoctrl.com/siemens/3RT1944-5AN21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1944-5AN21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1944-5AN21 magnet coil, Size S3, screw terminal, 220 V AC 50/60 Hz.","salesMarkdown":"The Siemens SIRIUS 3RT1944-5AN21 is a replacement magnet coil for Size S3 contactors, wound for 220 V AC at both 50 Hz and 60 Hz. It uses a screw terminal connection for the control supply. This is a phased-out product; the official successor is the SIRIUS 3RT2 series. Listed as a phased-out product. The manufacturer's designated successor is the SIRIUS 3RT2 series. For BOM lines that require this exact order code, sourcing is through the surplus and broker channel. This coil is mechanically and electrically sized for SIRIUS Size S3 contactors. The screw terminals accept the same control wiring as the original assembly.","metaTitle":"Siemens 3RT1944-5AN21 SIRIUS Magnet Coil, 220 V AC, Size S3","metaDescription":"Siemens SIRIUS 3RT1944-5AN21 magnet coil for Size S3 contactors, 220 V AC 50/60 Hz. Phased-out product; official 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":{"at 50 Hz":"0.8 ... 1.1","lifecycle_stage":"current","Product Brand Name":"SIRIUS","Product Designation":"Magnet coil","at 50 Hz rated value":"220 V","at 60 Hz rated value":"220 V","Type Of Voltage Of The Control Supply Voltage":"AC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$64.01","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=32353&mlfb=3RT1944-5AN21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1944-5AN21/alternatives.json"},"ai":{"faq":[{"question":"What is the coil's voltage and frequency rating?","answer":"220 V AC at both 50 Hz and 60 Hz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1944-5AN21","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/3RT1944-5AN21 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}}