{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1200-0CU20-0AA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1200-0CU20-0AA3","canonicalUrl":"https://aoctrl.com/siemens/3RK1200-0CU20-0AA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1200-0CU20-0AA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RK1200-0CU20-0AA3, K45 compact AS-Interface module, 4 digital inputs PNP, IP65, 20-30 VDC via bus.","salesMarkdown":"## AS-Interface field module, 4 PNP inputs The Siemens 3RK1200-0CU20-0AA3 is a K45 compact digital input module for AS-Interface networks. It provides 4 PNP inputs (3-wire sensor compatible) and draws its supply directly from the AS-Interface bus cable — no separate 24 VDC power feed needed. The module is rated IP65, so it mounts directly on machine frames or conveyor sections in washdown zones without an enclosure. Each input switches at ≥10 V (High level) and sinks ≥6 mA at signal 1, with off-state leakage below 1.5 mA. That's standard for 3-wire PNP proximity sensors and photoelectric eyes. The module's total AS-Interface current draw is 270 mA max, and the sensor supply (pins 1/3) is short-circuit and overload protected — so a failed sensor won't take down the bus segment. ## Mounting and addressing The 45×80×30 mm housing clips onto standard DIN rail or mounts to a wall using the K45 mounting plate (ordered separately — the module ships without one). Addressing is set via the front socket; the factory ID/ID2 code is 0/F. Each of the four sockets maps one input: socket 1 PIN 4 = IN1 (D0), up to socket 4 PIN 4 = IN4 (D3). Yellow LEDs show input state; a green/red dual LED reports AS-Interface communication and diagnostics.","metaTitle":"Siemens 3RK1200-0CU20-0AA3 AS-Interface K45, 4 inputs PNP, I","metaDescription":"Siemens 3RK1200-0CU20-0AA3 digital input module: 4 PNP inputs, AS-Interface powered, IP65, current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Type":"4 inputs","Depth":"30 mm","PIN 1":"sensor supply L+","PIN 3":"sensor supply L-","PIN 4":"data input","Width":"45 mm","title":"3RK1200-0CU20-0AA3","Height":"80 mm","Socket":"PIN 4 = IN1 (D0)","Socket 2":"PIN 4 = IN2 (D1)","Socket 3":"PIN 4 = IN3 (D2)","Socket 4":"PIN 4 = IN4 (D3)","Addressing":"front addressing socket","ID/ID2 code":"0/F","description":"AS-i compact module K45 digital 4 DI, IP65 4 x input, maximum 200 mA 4 x M8 socket Snap-on version Mounting plate 3RK1901-2EA00 or 3RK1901-2DA00 must be ordered separately","Delivery note":"the modules are delivered without mounting plate","Input Voltage":"20 ... 30 V","Input circuit":"PNP transistor","During Storage":"-40 ... +85 °C","display of I/Os":"yellow LED","display of Uaux":"not required","lifecycle_stage":"current","During Operation":"-25 ... +85 °C","Fastening Method":"standard rail mounting/wall mounting using mounting plate for K45 compact module","Shock Resistance":"15g / 11 ms","I/O configuration":"0","Number I/O sockets":"4","protection class IP":"IP65","Design Of The Product":"digital I/O modules for operation in the field, IP65 - K45","For Signal <1> Minimum":"6 mA","With Signal <0> Maximum":"1.5 mA","Design Of The Slave Type":"standard slave","Number Of Digital Inputs":"4","Number Of Digital Outputs":"0","Type Of Connection Technology":"2- and 3-wire technology","at ambient temperature 40 °C":"200 mA","Inputs switching level High min":"10 V","display of AS-Interface/diagnostics":"green/red dual LED","AS interface total current input max":"270 mA","Type Of Voltage Of The Input Voltages":"DC","Inputs sensor supply using AS-Interface":"short-circuit and overload resistant","Type Of Voltage Supply For Power Supply":"using AS-Interface","Design Of The Pin Assignment Of The Inputs":"standard assignement","AS interface Connection Polarity reversal protection":"built-in","Type Of Electrical Connection Of The Inputs And Outputs":"M8 snap-action terminal","operating voltage according to AS-Interface spezification":"26.5 ... 31.6 V","Property Of The Sensor Supply Short-Circuit And Overload Resistant":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f4614497aa57b31d830c5ab80bd98d9f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=189879&mlfb=3RK1200-0CU20-0AA3"},"ai":{"faq":[{"question":"What are the key ratings for this module?","answer":"4 PNP digital inputs, 20-30 VDC supply via AS-Interface bus, IP65 enclosure, 270 mA max bus current draw, 6 mA minimum input signal current at ≥10 V High level."},{"question":"Can this module be panel-mounted or does it need an enclosure?","answer":"It's rated IP65, so it mounts directly on machine frames or in washdown areas without an enclosure. It clips onto standard DIN rail or mounts to a wall using the optional K45 mounting plate."},{"question":"How is the module addressed on the AS-Interface bus?","answer":"Addressing is set via the front socket. The factory default ID/ID2 code is 0/F."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1200-0CU20-0AA3","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/3RK1200-0CU20-0AA3 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}}