{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1944-5AR61","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1944-5AR61","canonicalUrl":"https://aoctrl.com/siemens/3RT1944-5AR61","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1944-5AR61","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS magnet coil, 3RT1944-5AR61, 400 V AC 50/60 Hz, Size S3, screw terminal, phased-out product with successor SIRIUS 3RT2.","salesMarkdown":"The Siemens SIRIUS 3RT1944-5AR61 is a magnet coil for Size S3 contactors, rated 400 V AC at 50 Hz and 440 V AC at 60 Hz, with a screw terminal connection. The coil's operating range at 50 Hz is 0.8 to 1.1 times the rated voltage, meaning it holds in reliably down to 320 V and picks up consistently across a 15% tolerance band — useful for lines with brownout conditions or long control-wire runs. This coil is marked as a phased-out product. The official successor is the SIRIUS 3RT2 series. The coil mounts onto the SIRIUS Size S3 contactor via screw terminals. The AC control supply voltage is fixed at 400 V (50 Hz) / 440 V (60 Hz) — no dual-voltage tap or DC variant. If the panel runs a 24 V DC control bus, this coil requires a separate AC supply or a relay interface.","metaTitle":"Siemens 3RT1944-5AR61 SIRIUS Magnet Coil, 400 V AC 50/60 Hz","metaDescription":"Siemens SIRIUS magnet coil 3RT1944-5AR61, 400 V AC 50/60 Hz, for Size S3 contactors. Phased-out; successor is 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":"400 V","at 60 Hz rated value":"440 V","Type Of Voltage Of The Control Supply Voltage":"AC"}},"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=421079&mlfb=3RT1944-5AR61","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1944-5AR61/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT1944-5AR61?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm position."},{"question":"What is 3RT1944-5AR61's rated coil voltage?","answer":"400 V AC at 50 Hz, 440 V AC at 60 Hz. The operating range at 50 Hz is 0.8 to 1.1 times the rated voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1944-5AR61","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/3RT1944-5AR61 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}}