{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT5975-5AU31","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT5975-5AU31","canonicalUrl":"https://aoctrl.com/siemens/3RT5975-5AU31","factsUrl":"https://aoctrl.com/api/mcp/products/3RT5975-5AU31","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT5975-5AU31 magnet coil, withdrawal type for size S12 contactors, 277 V AC/DC at 50/60 Hz, current lifecycle stage.","salesMarkdown":"## Siemens SIRIUS 3RT5975-5AU31 — Magnet Coil for Size S12 Contactors The Siemens SIRIUS 3RT5975-5AU31 is a withdrawal-type magnet coil designed for size S12 contactors. This is the replacement coil you pull when the original contactor coil fails — it's the service part, not the full contactor assembly. ## What the 277 V AC/DC Rating Means for Fit The 277 V rating covers both AC (50/60 Hz) and DC control circuits from a single coil — no need to swap coils when switching between control supply types. This is common in North American panels where 277 V phase-to-neutral is standard for lighting and control transformers, and in European 400 V systems tapped phase-to-neutral. The AC/DC compatibility simplifies stocking: one coil serves both architectures. This coil mounts into the SIRIUS size S12 contactor frame — it's the withdrawable coil assembly, meaning you slide it into the contactor's coil cavity and secure it. No rewiring of the main power circuit; just the control wires to the coil terminals. The AC/DC coil holds at 277 V nominal; verify your control transformer or DC supply delivers that voltage under load.","metaTitle":"Siemens 3RT5975-5AU31 SIRIUS Magnet Coil, 277 V AC/DC, Size","metaDescription":"Siemens SIRIUS 3RT5975-5AU31 magnet coil, 277 V AC/DC, for size S12 contactors. Lifecycle stage: current. Sourced to order against RFQ. Available now.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current","Product Brand Name":"SIRIUS","2 at DC rated value":"277 V","Product Designation":"Magnet coil","at 50 Hz rated value":"277 V","at 60 Hz rated value":"277 V","Type Of Voltage Of The Control Supply Voltage":"AC/DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ba2d62e71bde8bced9ecec63183d8252.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=580127&mlfb=3RT5975-5AU31","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT5975-5AU31/alternatives.json"},"ai":{"faq":[{"question":"What is the rated control voltage for 3RT5975-5AU31?","answer":"The coil is rated at 277 V for both AC (50/60 Hz) and DC control supplies."},{"question":"Where can I buy 3RT5975-5AU31 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What brand and series is 3RT5975-5AU31?","answer":"It is a Siemens SIRIUS series magnet coil."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT5975-5AU31","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/3RT5975-5AU31 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}}