{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1934-5AN21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1934-5AN21","canonicalUrl":"https://aoctrl.com/siemens/3RT1934-5AN21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1934-5AN21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1934-5AN21 magnet coil, Size S2, screw terminal, 220 V AC 50/60 Hz, phased-out product.","salesMarkdown":"The Siemens SIRIUS 3RT1934-5AN21 is a replacement magnet coil for Size S2 contactors in the SIRIUS family, terminated with screw terminals and rated for 220 V AC control supply at both 50 Hz and 60 Hz. This is a phased-out product; the official successor is the SIRIUS 3RT2 series. If you're holding a BOM line with this order code, the coil itself is still a standard Size S2 fit — the mounting footprint and terminal arrangement match the existing contactor frame — but the supply channel has shifted to the 3RT2 generation. The coil draws 0.8 to 1.1 A at 50 Hz (220 V). That's the holding current once the contactor is sealed — the inrush (pick-up) will be higher, but the steady-state load on the control transformer is what this figure governs. At 60 Hz the same 220 V coil holds within a similar band, so a panel wired for 50 Hz doesn't need a coil swap if the line frequency changes. The screw terminal connection is the standard Size S2 footprint — same as the contactor base. If your panel was built around a 3RT1 contactor, this coil drops in without rewiring the control circuit.","metaTitle":"Siemens 3RT1934-5AN21 SIRIUS Magnet Coil, 220 V AC, 50/60 Hz","metaDescription":"Siemens SIRIUS 3RT1934-5AN21 magnet coil for Size S2 contactors, 220 V AC 50/60 Hz, screw terminal. Phased-out product; successor is SIRIUS 3RT2 series. Sourced to order.","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":"$15.27","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=488894&mlfb=3RT1934-5AN21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1934-5AN21/alternatives.json"},"ai":{"faq":[{"question":"What replaces the 3RT1934-5AN21?","answer":"The official successor is the SIRIUS 3RT2 series. That series covers the same Size S2 contactor frame and 220 V AC control voltage."},{"question":"What is the coil voltage and frequency rating?","answer":"Rated 220 V AC at both 50 Hz and 60 Hz. The holding current at 50 Hz is 0.8 to 1.1 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1934-5AN21","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/3RT1934-5AN21 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}}