{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1901-1NR04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1901-1NR04","canonicalUrl":"https://aoctrl.com/siemens/3RK1901-1NR04","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1901-1NR04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens AS-Interface accessory, 3RK1901-1NR04, 4-fold M12 feeder, 4 × M12 socket, IP67, insulation piercing connection for AS-i flat cable, 26.5–31.6 V operating voltage, 4 A per socket.","salesMarkdown":"The Siemens 3RK1901-1NR04 is an AS-Interface 4-fold M12 feeder that transitions an AS-i flat cable into four M12 sockets, carrying both the AS-i bus signal and auxiliary power (Uaux) to each port. It uses an insulation-piercing connection method — no stripping or special tools needed on the flat cable, which saves time when you're adding drops on an existing line. Each M12 socket follows a fixed pinout: pin 1 = AS-i +, pin 2 = Uaux -, pin 3 = AS-i -, pin 4 = Uaux +. The operating voltage range is 26.5 to 31.6 V per the AS-Interface specification, and each socket is rated up to 4 A continuous. That 4 A per port matters when you're feeding multiple sensors or actuators through one drop — keep the total draw under that per-socket limit. Rated IP67, so it handles washdown and wet environments — suitable for food-and-bev lines, car washes, or outdoor conveyor sections where you don't want a junction box. The housing mounts to a wall or standard DIN rail, and the delivery includes the mounting plate. Temperature range is -25 to +85 °C for both operation and storage, which covers most industrial enclosures and outdoor cabinets in moderate climates. The insulation-piercing design means you run the flat cable through the housing and close the clamp — no need to break the cable or add a separate tap. That keeps the IP67 seal intact and avoids a potential leak point.","metaTitle":"Siemens 3RK1901-1NR04 AS-i M12 Feeder, 4-Port, IP67","metaDescription":"Siemens 3RK1901-1NR04 AS-Interface 4-fold M12 feeder, 4x M12 sockets, IP67, 26.5-31.6V, 4A per port. Active lifecycle, available to order. RFQ for current pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"title":"3RK1901-1NR04","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 IP67 Delivery incl. mounting plate","Number sockets":"4","Type of device":"AS-Interface accessories","Scope of supply":"Delivery including mounting plate","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":null,"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=374075&mlfb=3RK1901-1NR04"},"ai":{"faq":[{"question":"What is the 3RK1901-1NR04's function?","answer":"It transitions an AS-i flat cable into four M12 sockets, providing both the AS-i bus signal and auxiliary power (Uaux) at each port via an insulation-piercing connection."},{"question":"What are the pin assignments on the M12 sockets?","answer":"Pin 1 = AS-i +, pin 2 = Uaux -, pin 3 = AS-i -, pin 4 = Uaux +. The operating voltage is 26.5–31.6 V per the AS-Interface specification, and each socket is rated for 4 A continuous."},{"question":"Where can I buy the 3RK1901-1NR04?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1901-1NR04","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/3RK1901-1NR04 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}}