{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1944-5AR62","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1944-5AR62","canonicalUrl":"https://aoctrl.com/siemens/3RT1944-5AR62","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1944-5AR62","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1944-5AR62, magnet coil, Size S3, 400 V AC 50/60 Hz, spring-loaded connection, phased-out product.","salesMarkdown":"The Siemens SIRIUS 3RT1944-5AR62 is a replacement magnet coil for Size S3 contactors, wound for 400 V AC at 50 Hz and 440 V AC at 60 Hz control supply. It uses spring-loaded terminals for the coil connections — a detail that matters if you're swapping out a screw-terminal coil on a live rail: the spring cage grabs the stripped wire, no screwdriver torque needed, but you'll need a small flathead to press the release slot if you mess up the strip length. The coil draws its listed inrush and holding VA from the control transformer; the spring-loaded connection accepts solid or ferruled stranded wire typical for control circuits. The coil snaps onto the Size S3 contactor magnet system — no tools for the mechanical fit, just align and press. Mounts on the same DIN rail as the contactor, so no extra panel space needed.","metaTitle":"Siemens 3RT1944-5AR62 SIRIUS Magnet Coil, 400 V AC, Phased O","metaDescription":"Siemens SIRIUS 3RT1944-5AR62 magnet coil for Size S3 contactors. 400 V AC 50/60 Hz, spring-loaded terminals. Phased-out product; successor is 3RT2 series. Source to order against R","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=217683&mlfb=3RT1944-5AR62","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1944-5AR62/alternatives.json"},"ai":{"faq":[{"question":"What voltage does this coil need?","answer":"It is rated for 400 V AC at 50 Hz and 440 V AC at 60 Hz control supply voltage."},{"question":"What is the connection type for the coil wires?","answer":"Spring-loaded terminals. No screw clamping — push the stripped wire in; use a small screwdriver to press the release slot to remove it."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1944-5AR62","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/3RT1944-5AR62 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}}