{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1911-4AB16","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1911-4AB16","canonicalUrl":"https://aoctrl.com/siemens/3RK1911-4AB16","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1911-4AB16","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS ECOFAST selective block, 3RK1911-4AB16, 16 A rated current, M12 feedback contact, maintenance switch function.","salesMarkdown":"The Siemens 3RK1911-4AB16 is an ECOFAST selective block designed for selective switching-off in a maintenance switch function. This is a SIRIUS-series accessory that sits between a contactor and the load, allowing an operator to isolate a specific branch of a machine for safe maintenance while other sections remain powered. The 16 A rated current is the continuous current the block can carry in its intended duty. For a maintenance switch function, this means it can handle the full-load current of a motor or resistive load up to that ampacity without overheating. The M12 feedback contact gives a discrete signal back to the PLC or safety relay confirming the block is in the open (isolated) position — a standard requirement for lockout/tagout verification in a safety circuit. ## Deployment context The M12 feedback connector is a 4- or 5-pin industry-standard round connector, common in sensor/actuator wiring on automated lines — no special tooling needed beyond a standard M12 cordset.","metaTitle":"Siemens 3RK1911-4AB16 ECOFAST Selective Block, 16 A, M12","metaDescription":"Siemens 3RK1911-4AB16 ECOFAST selective block for selective switching-off. Rated 16 A with M12 feedback contact. 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":{"title":"3RK1911-4AB16","description":"ECOFAST Selective block for selective switching-off Maintenance switch function rated current 16 A Feedback contact M12","lifecycle_stage":"current","Substance Prohibitance (Date)":"05/01/2012"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$254.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dfd54a52b631d2130c202106b62dde03.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=197503&mlfb=3RK1911-4AB16"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1911-4AB16","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/3RK1911-4AB16 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}}