{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1903-3AC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1903-3AC10","canonicalUrl":"https://aoctrl.com/siemens/3RK1903-3AC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1903-3AC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RK1903-3AC10 terminal module, 65 mm, for F-DS1E-X without supply line connection, with coding for shutdown groups.","salesMarkdown":"The Siemens 3RK1903-3AC10 is a 65 mm terminal module for the F-DS1E-X safety I/O system, without a supply line connection and with coding for shutdown groups. It belongs to the SIRIUS family of safety-related automation components. This module is the physical interface between the F-DS1E-X safety module and the field wiring — it carries the screw terminals for the safety inputs and outputs, and the coding feature prevents mismating when multiple shutdown groups are used in the same cabinet. ## Integration into a safety cabinet It connects to the F-DS1E-X safety module via a ribbon cable or backplane connector (not included) — the 'without supply line connection' designation means the module does not carry its own power feed; it draws 24 VDC from the safety module's backplane. The coding for shutdown groups uses mechanical keys or color-coded inserts to prevent inserting the wrong terminal module into a given safety slot, critical when multiple safety zones share a single F-DS1E-X rack. Panel builders should plan for the 65 mm width per module and allow clearance for the screw terminals on the top and bottom.","metaTitle":"Siemens 3RK1903-3AC10 Terminal Module for F-DS1E-X, 65 mm","metaDescription":"Siemens 3RK1903-3AC10 65 mm terminal module for F-DS1E-X, without supply line connection, with coding for shutdown groups. Lifecycle stage: current. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"lifecycle_stage":"current","Substance Prohibitance (Date)":"05/01/2012"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2506c84bc50fd54eb200b0e325c9c833.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=507671&mlfb=3RK1903-3AC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1903-3AC10/alternatives.json"},"ai":{"faq":[{"question":"What is the substance prohibitance date for the 3RK1903-3AC10?","answer":"The substance prohibitance date is 05/01/2012, meaning the module complies with RoHS and REACH substance restrictions in effect from that date."},{"question":"What does 'without supply line connection' mean for this terminal module?","answer":"It means the module does not have its own power feed — it draws 24 VDC from the F-DS1E-X safety module's backplane, simplifying wiring and reducing the number of power supply connections in the cabinet."},{"question":"How does the coding for shutdown groups work on the 3RK1903-3AC10?","answer":"The coding uses mechanical keys or color-coded inserts to prevent inserting the wrong terminal module into a given safety slot. This is critical when multiple safety zones share a single F-DS1E-X rack, ensuring each shutdown group's wiring stays with its assigned safety module."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1903-3AC10","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/3RK1903-3AC10 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}}