{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1935-5AF01","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1935-5AF01","canonicalUrl":"https://aoctrl.com/siemens/3RT1935-5AF01","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1935-5AF01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Magnet coil, 3RT1935-5AF01, 110 V AC 50 Hz, screw terminal, Size S2 contactors, phased-out product with successor.","salesMarkdown":"It's a phased-out product — the successor is the SIRIUS 3RT2 series, so if you're holding a BOM line with this code, that's the cross-reference you need for a new-design replacement. The coil operates across 0.8 to 1.1 times the rated voltage at 50 Hz, which means it pulls in reliably down to about 88 V and holds through line sags up to 121 V — a useful tolerance for industrial control circuits with shared transformer loads. This coil mounts onto SIRIUS Size S2 contactors — the 3RT2 series frame that uses screw terminals for the coil connection. If you're swapping a failed coil in an existing panel, verify the contactor frame size and the coil voltage; the 110 V AC 50 Hz winding is specific to that supply, and a 60 Hz or DC coil won't interchange without changing the control transformer or rectifier.","metaTitle":"Siemens 3RT1935-5AF01 SIRIUS Magnet Coil, 110 V AC 50 Hz, Ph","metaDescription":"Siemens SIRIUS 3RT1935-5AF01 magnet coil for Size S2 contactors. 110 V AC, 50 Hz, screw terminal. Phased-out product; successor is SIRIUS 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":"110 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=508981&mlfb=3RT1935-5AF01","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1935-5AF01/alternatives.json"},"ai":{"faq":[{"question":"What replaces 3RT1935-5AF01?","answer":"The official successor is the SIRIUS 3RT2 series. That's a different contactor family, not just a coil swap — so for a drop-in replacement on an existing Size S2 contactor, you'd need to source the 3RT1935-5AF01 through independent channels."},{"question":"What coil voltage and frequency does 3RT1935-5AF01 use?","answer":"110 V AC at 50 Hz, with an operating range of 0.8 to 1.1 times the rated voltage. It's an AC control supply voltage coil with screw terminals."},{"question":"Where can I buy 3RT1935-5AF01?","answer":"We source it to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ and we'll check the channel for you."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1935-5AF01","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/3RT1935-5AF01 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}}