{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1901-1NR00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1901-1NR00","canonicalUrl":"https://aoctrl.com/siemens/3RK1901-1NR00","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1901-1NR00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RK1901-1NR00 AS-Interface 4-fold M12 feeder, AS-i with Uaux, 4x M12 socket, IP67, 4A per contact, insulation piercing connection.","salesMarkdown":"## What this AS-i feeder does on the line The 3RK1901-1NR00: This is a 4-port M12 breakout for AS-Interface flat cable — it transitions the two-wire AS-i bus plus auxiliary power (Uaux) into four M12 sockets, each carrying both signal and 24V aux power per the pinout: pin 1 = AS-i +, pin 2 = Uaux -, pin 3 = AS-i -, pin 4 = Uaux +. The insulation-piercing connection method means you lay the AS-i flat cable into the housing and clamp down — no stripping, no separate terminals. The coupling module (FK-E) is included in the delivery. Rated IP67, so it lives on the machine frame or in a washdown zone without a separate enclosure. Ambient range -25 to +85°C covers most plant-floor conditions including hot motor cabinets. ## Current production — no obsolescence concern Mounts on standard DIN rail or directly to a wall plate. The 4 × M12 sockets accept standard M12 cordsets, so field wiring uses off-the-shelf cables. Each contact is rated 4 A max — enough for a bank of sensors or small actuators downstream. The operating voltage follows the AS-Interface spec at 26.5 to 31.6 V. ## Sourcing this part for a BOM line If you need a second source, the closest functional match would be another AS-i M12 feeder with the same 4-port, IP67, Uaux-capable layout — confirm the pin assignment matches your harness before substituting.","metaTitle":"Siemens 3RK1901-1NR00 AS-i M12 Feeder, 4-Port, IP67","metaDescription":"Siemens 3RK1901-1NR00 AS-Interface 4-fold M12 feeder. Transitions AS-i flat cable to 4x M12 sockets with Uaux. IP67, 4A per contact.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"title":"3RK1901-1NR00","Function":"AS-i flat cable transition to M12","Connection":"4 × M12 socket","description":"AS-Interface 4-fold M12 feeder U_ASI and Uaux, 4 x M12 socket Delivery including coupling module","Number sockets":"4","Type of device":"AS-Interface accessories","Scope of supply":"delivery incl. FK-E coupling module","lifecycle_stage":"current","Type of mounting":"for wall and standard rail mounting","Ambient Temperature":"-25 ... +85°C","Degree Of Protection":"IP67","Design Of The Product":"AS-i M12 4-fold feeder, AS-i with Uaux, 4x M12 socket","Contacts Load rating max":"4A","Inputs socket assignment":"1 = AS-i \"+\" 2 = Uaux \"-\" 3=AS-i \"-\" 4 = Uaux \"+\"","Type Of Electrical Connection":"insulation piercing method for AS-Interface flat cable","Ambient Temperature During Storage":"-25 ... +85°C","operating voltage according to AS-Interface spezification":"26.5 ... 31.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$488.33","stockQuantity":0,"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=389338&mlfb=3RK1901-1NR00"},"ai":{"faq":[{"question":"What is the pinout on the M12 sockets?","answer":"Pin 1 = AS-i +, pin 2 = Uaux -, pin 3 = AS-i -, pin 4 = Uaux +. This carries both the AS-i bus signal and 24V auxiliary power on each port."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1901-1NR00","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/3RK1901-1NR00 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}}