{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1935-5AL21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1935-5AL21","canonicalUrl":"https://aoctrl.com/siemens/3RT1935-5AL21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1935-5AL21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, magnet coil for Size S2 contactors, 230 V AC 50/60 Hz, screw terminal, phased-out product.","salesMarkdown":"The Siemens 3RT1935-5AL21 is a SIRIUS magnet coil designed for Size S2 contactors, rated at 230 V AC at both 50 Hz and 60 Hz with a screw terminal connection. This is a phased-out product; the official successor is the SIRIUS 3RT2 series. For BOM freeze or long-term support planning, the 3RT2 series is the drop-in replacement path to quote against. This coil mounts onto SIRIUS Size S2 contactors via screw terminals. The operating range at 50 Hz is 0.8 to 1.1 times the rated voltage, meaning the coil holds in reliably down to about 184 V and up to 253 V at the terminals.","metaTitle":"Siemens 3RT1935-5AL21 SIRIUS Magnet Coil, 230 V AC, Size S2","metaDescription":"Siemens 3RT1935-5AL21 SIRIUS magnet coil for Size S2 contactors, 230 V AC 50/60 Hz, screw terminal. Phased-out — official successor is the SIRIUS 3RT2 series. Sourced to order agai","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":"230 V","at 60 Hz rated value":"230 V","Type Of Voltage Of The Control Supply Voltage":"AC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$86.32","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=170544&mlfb=3RT1935-5AL21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1935-5AL21/alternatives.json"},"ai":{"faq":[{"question":"What replaces 3RT1935-5AL21?","answer":"The official successor is the SIRIUS 3RT2 series coil. Quote the 3RT2 equivalent against your Size S2 contactor frame."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1935-5AL21","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/3RT1935-5AL21 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}}