{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1911-4AB08","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1911-4AB08","canonicalUrl":"https://aoctrl.com/siemens/3RK1911-4AB08","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1911-4AB08","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS ECOFAST selective block 3RK1911-4AB08, for selective switching-off with maintenance switch function, rated current 08 A, M12 feedback contact.","salesMarkdown":"The Siemens 3RK1911-4AB08 is an ECOFAST selective block used for selective switching-off in motor feeder circuits, with an integrated maintenance switch function. This block is part of the SIRIUS ECOFAST system — a modular, pre-wired distribution architecture for motor control centres and machine feeder panels. The M12 feedback contact lets a PLC or safety relay confirm the switch state without running separate control wires back to the cabinet door. The substance prohibitance date of 05/01/2012 indicates RoHS compliance alignment with the 2011/65/EU directive. This part meets current EU material restrictions for industrial equipment. No broker or surplus channel needed — standard lead times apply through Siemens authorised distribution. ## Integration notes The ECOFAST selective block mounts directly into the ECOFAST distribution system — a pre-assembled busbar and enclosure system for machine-level power distribution. The M12 feedback connector plugs into the system's control harness; no additional wiring to a cabinet door is required for the maintenance-off indication. Rated at 8 A, this block is sized for smaller motor feeders or control-circuit branches within an ECOFAST panel. The maintenance switch function provides a local lockable off position for safe access during servicing, with the feedback contact confirming isolation to the upstream controller.","metaTitle":"Siemens 3RK1911-4AB08 ECOFAST Selective Block, 8 A, M12 Feed","metaDescription":"Siemens 3RK1911-4AB08 ECOFAST selective block for selective switching-off with maintenance switch function. Rated current 08 A, M12 feedback contact. Current lifecycle stage. Sourc","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"title":"3RK1911-4AB08","description":"ECOFAST Selective block for selective switching-off Maintenance switch function Rated current 08 A Feedback contact M12","lifecycle_stage":"current","Substance Prohibitance (Date)":"05/01/2012"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f1146b2cc6f545a2f0b7b9ae3a1bfb9b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=179181&mlfb=3RK1911-4AB08"},"ai":{"faq":[{"question":"What is the substance prohibitance date for this part?","answer":"The substance prohibitance date is 05/01/2012, aligning with RoHS Directive 2011/65/EU compliance."},{"question":"What does the M12 feedback contact do?","answer":"The M12 feedback contact signals the position of the maintenance switch to a PLC or safety relay, confirming whether the block is in the off (isolated) or on (operating) state."},{"question":"How do I source this part?","answer":"As an active-production part, it is available through standard Siemens distribution channels. Submit an RFQ for current pricing and lead time — no special sourcing or broker channel is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1911-4AB08","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/3RK1911-4AB08 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}}