{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1935-5AV01","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1935-5AV01","canonicalUrl":"https://aoctrl.com/siemens/3RT1935-5AV01","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1935-5AV01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, magnet coil, Size S2, screw terminal, 400 V AC 50 Hz, 3RT1935-5AV01.","salesMarkdown":"The Siemens 3RT1935-5AV01 is a SIRIUS magnet coil designed for Size S2 contactors, with a 400 V AC control supply voltage at 50 Hz. It uses a screw terminal connection for the coil wires. This coil is the replacement or spare part for the contactor's magnetic system — when the original coil fails or the voltage needs changing, this is the drop-in component that mounts onto the contactor's armature stack. ## Lifecycle status and sourcing reality The 3RT1935-5AV01 is a phased-out product. The manufacturer lists the successor as the SIRIUS 3RT2 series, meaning new designs or panel rebuilds should migrate to that platform. For existing panels that still carry this coil, replacement units are sourced through independent distribution channels. The 400 V AC rating at 50 Hz defines the control voltage that must be supplied to the coil terminals. If your panel runs a 400 V AC control transformer at 50 Hz, this coil engages the contactor's magnetic circuit directly. The operating range of 0.8... 1.1 times the rated voltage means the coil reliably picks up between 320 V and 440 V and holds in down to about 320 V — useful to know if your line voltage sags under load. The screw terminal connection accepts standard solid or stranded wire, making it straightforward to swap during a line-down event without special tooling.","metaTitle":"Siemens 3RT1935-5AV01 SIRIUS Magnet Coil, 400 V AC, Phased O","metaDescription":"Siemens 3RT1935-5AV01 SIRIUS magnet coil for Size S2 contactors, 400 V AC 50 Hz. Phased-out product; successor is SIRIUS 3RT2 series. Sourced to order against an 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":"400 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=333732&mlfb=3RT1935-5AV01","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1935-5AV01/alternatives.json"},"ai":{"faq":[{"question":"What is the coil voltage and operating range for 3RT1935-5AV01?","answer":"The coil is rated 400 V AC at 50 Hz, with an operating range of 0.8 to 1.1 times the rated voltage (320 V to 440 V)."},{"question":"Where can I buy 3RT1935-5AV01?","answer":"This phased-out part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What replaces 3RT1935-5AV01?","answer":"The official successor is the SIRIUS 3RT2 series. For a direct functional cross-reference, the 3RH6122-1AR60 is a SIRIUS contactor relay with the same 400 V AC coil voltage and screw terminal connection, but it is a Size S00 device — verify mechanical fit in your panel before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1935-5AV01","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/3RT1935-5AV01 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}}