{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT5934-5AC21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT5934-5AC21","canonicalUrl":"https://aoctrl.com/siemens/3RT5934-5AC21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT5934-5AC21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT5934-5AC21 magnet coil, 24 V AC 50/60 Hz, screw terminal, current lifecycle stage.","salesMarkdown":"## Lifecycle and Sourcing Reality The 3RT5934-5AC21: For a BOM freeze or a line-down replacement, this coil is quoted to order against the required quantity. Availability and current pricing are confirmed at RFQ time through authorized industrial distribution. ## What This Coil Is and Where It Fits This is a SIRIUS magnet coil — the control-side component that energizes the contactor armature. It is the replacement or spare for any SIRIUS contactor that takes a 24 V AC coil with screw-terminal connections. Rated 24 V AC at both 50 Hz and 60 Hz, with an operating range of 0.8 to 1.1 times the rated voltage at 50 Hz. That means the coil pulls in reliably between about 19 V and 26 V AC — a typical tolerance for industrial control transformers. ## Mounting and Integration Notes Screw-terminal connection — no special tooling needed for panel wiring. The coil snaps onto the contactor yoke; verify the mechanical interlock and the armature gap are within spec before applying control voltage.","metaTitle":"Siemens 3RT5934-5AC21 SIRIUS Magnet Coil, 24 V AC","metaDescription":"Siemens SIRIUS 3RT5934-5AC21 magnet coil, 24 V AC 50/60 Hz, screw terminal. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"title":"3RT5934-5AC21","at 50 Hz":"0.8 ... 1.1","description":"Coil for contactors 24 V AC, 50/60 Hz screw terminal","lifecycle_stage":"current","Product Brand Name":"SIRIUS","Product Designation":"Magnet coil","at 50 Hz rated value":"24 V","at 60 Hz rated value":"24 V","Type Of Voltage Of The Control Supply Voltage":"AC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fc57c5be5427319b15db47eb4e1da124.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=580326&mlfb=3RT5934-5AC21"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT5934-5AC21","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/3RT5934-5AC21 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}