{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1200-0CT20-0AA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1200-0CT20-0AA3","canonicalUrl":"https://aoctrl.com/siemens/3RK1200-0CT20-0AA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1200-0CT20-0AA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RK1200-0CT20-0AA3, AS-Interface K45 compact digital I/O module, 4 PNP inputs, IP67, 20-30 VDC, current lifecycle.","salesMarkdown":"The Siemens 3RK1200-0CT20-0AA3 is a K45 compact digital I/O module for AS-Interface fieldbus networks, providing 4 PNP inputs in a sealed IP67 housing. It draws power directly from the AS-Interface cable, so no separate 24 V supply is needed at the module — the yellow flat cable carries both data and power. The module is designed for standard rail mounting or wall mounting via a K45 mounting plate, and the front addressing socket lets you set the slave address with a standard AS-Interface hand-held programmer. The 4 inputs are PNP (sourcing) type, switching at a minimum high-level threshold of 10 V, with a signal current of at least 6 mA at logic 1 and under 1.5 mA at logic 0. The sensor supply on PIN 1 (L+) and PIN 3 (L-) is short-circuit and overload protected, so a shorted sensor lead won't take down the entire AS-Interface segment. Total current draw from the AS-Interface bus is capped at 270 mA at 40 °C ambient, which includes both module electronics and the sensor supply current — budget accordingly when calculating segment load. IP67 protection means the module and its M12-style sockets survive washdown, dust, and condensation — suitable for mounting directly on a conveyor frame or machine base in food, beverage, or automotive assembly lines. ## Integration notes Each of the four M12 sockets maps PIN 4 to a data input (D0 through D3). The yellow LED per input shows the switching state; the green/red dual LED on the front indicates AS-Interface communication and diagnostics. Modules are delivered without a mounting plate — order the K45 mounting plate separately if wall-mounting.","metaTitle":"Siemens 3RK1200-0CT20-0AA3 AS-Interface K45 Module, 4 Inputs","metaDescription":"Siemens 3RK1200-0CT20-0AA3 AS-Interface digital I/O module with 4 PNP inputs, IP67, 20-30 VDC, current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"3RK1200-0CT20-0AA3","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, IP67 4 x input, maximum 200 mA 4 x M8 socket Screw 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":"IP67","Design Of The Product":"digital I/O modules for operation in the field, IP67 - 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 screw-type terminals","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/4cf6ee3a9ccca8a130a81cd91c9e5445.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=28658&mlfb=3RK1200-0CT20-0AA3"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1200-0CT20-0AA3","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/3RK1200-0CT20-0AA3 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}}