{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1924-5AN21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1924-5AN21","canonicalUrl":"https://aoctrl.com/siemens/3RT1924-5AN21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1924-5AN21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS magnet coil, Size S0, 220 V AC 50/60 Hz, screw terminal, order code 3RT1924-5AN21.","salesMarkdown":"The Siemens SIRIUS 3RT1924-5AN21 is a Size S0 magnet coil for contactors, rated 220 V AC at both 50 Hz and 60 Hz. It operates across 0.8 to 1.1 times the rated voltage, meaning the coil picks up reliably from about 176 V and holds in up to 242 V — the standard tolerance band for AC-operated contactor coils in this class. The coil is the Size S0 form factor, meaning it swaps directly into any SIRIUS 3RT1 or 3RT2 contactor of the same frame size that uses a screw-terminal coil connection. No rewiring of the panel is needed if the existing contactor is a Size S0 unit — the coil slides onto the magnet stack and the screw terminals accept the same control wiring.","metaTitle":"Siemens 3RT1924-5AN21 SIRIUS Magnet Coil, 220 V AC 50/60 Hz","metaDescription":"Siemens 3RT1924-5AN21 SIRIUS magnet coil, 220 V AC 50/60 Hz, Size S0. Phased-out product; official successor is 3RT2924-5AN21. 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":"$88.49","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=439839&mlfb=3RT1924-5AN21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1924-5AN21/alternatives.json"},"ai":{"faq":[{"question":"What replaces the 3RT1924-5AN21?","answer":"The Siemens SIRIUS 3RT2924-5AN21 is the official successor. It is the same Size S0, 220 V AC 50/60 Hz coil with screw terminals — a direct mechanical and electrical swap."},{"question":"Where can I buy the 3RT1924-5AN21?","answer":"This phased-out part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — the quote will confirm whether stock exists in the broker network or if a last-time-buy channel is open."},{"question":"Will the 3RT1924-5AN21 fit a contactor originally specified with 3RT1025-1AN24?","answer":"Yes, if the contactor is a Size S0 frame. The 3RT1025-1AN24 is a Size S0 power contactor, and the 3RT1924-5AN21 coil is the correct 220 V AC 50/60 Hz replacement coil for that frame. The coil terminals are screw-type, matching the contactor's control circuit connection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1924-5AN21","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/3RT1924-5AN21 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}}