{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1901-1DG12-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1901-1DG12-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RK1901-1DG12-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1901-1DG12-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RK1901-1DG12-1AA0, SlimLine S22.5 single data decoupling module, 22.5mm width, 120W supplied power, 21-32V DC input, IP20.","salesMarkdown":"The Siemens 3RK1901-1DG12-1AA0 is a single data decoupling module from the SlimLine S22.5 series, designed to sit inside an IP20 control cabinet. Its job is to decouple the AS-Interface data signal from the 24V DC power supply on the AS-i network, preventing the power supply from loading the data line and ensuring clean communication between the AS-i master and slaves. It supplies up to 120W of active power to the AS-i segment, drawing a maximum of 4.1A at the input and delivering up to 4A at the output, both at the rated 21-32V DC range. The module includes ground fault detection and is suitable for both grounded and non-grounded AS-i networks, with an electronic short-circuit protection design and an output that is short-circuit proof. For control signal switching, the auxiliary contacts are rated at 3A at AC-15 at 24V and 1A at DC-13 at 24V — these ratings govern the inductive load switching capability for signaling and interlocking circuits, not the AS-i power path. The module mounts on a standard 35-mm DIN rail or can be wall-mounted using the plug-in flaps. It occupies a single 22.5mm width slot — the SlimLine S22.5 footprint — and must be installed in a vertical orientation. The 121.2mm depth is the dimension to check for enclosure clearance, especially if the backplane has deep wiring ducts or a second row of terminals. Wiring connections accept 2x (0.25... 1.5 mm²) solid or stranded conductors with or without core-end processing, or 2x (24... 16) AWG. Strip length and ferrule sizing follow standard practice for spring-cage terminals in this class. The module is suitable for use in safety-related circuits, with a test function for signaling contacts and an LED status display. It does not support auto-reset or sequential connected time-delay, but does accept an external reset signal. The closest functional second-source question comes up — the 3RT1036-1AB00 is a contactor, not a data decoupling module. It will not drop into this panel position or perform the same function. The 3RK1901-1DG12-1AA0 is the correct part for AS-i data decoupling; no rewiring or substitution is possible with a contactor. The module operates over an ambient temperature range of -25 to +70°C, which covers most control cabinet environments including unheated enclosures.","metaTitle":"Siemens 3RK1901-1DG12-1AA0 AS-i Data Decoupling Module, 22.5","metaDescription":"Siemens 3RK1901-1DG12-1AA0 single data decoupling module for AS-Interface networks. 22.5mm SlimLine S22.5, 120W supplied power, 21-32V DC, IP20. Current production. Sourced to orde","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"121.2mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"22.5mm","title":"3RK1901-1DG12-1AA0","Height":"104.9mm","auto-RESET":"No","Rated Value":"21 ... 32V","description":"AS-i data decoupler 1 x 4 A Spring-type terminals, AS-i single Data decoupling module IP20, SlimLine S22.5 spring-type terminals Overall width module 22.5 mm IN: 24 V / 30 V DC OUT: 1 x AS-i, 4 A Integrated overload protection Integrated ground fault detection Signaling contact Remote reset","External Reset":"Yes","Reset Function":"yes","lifecycle_stage":"current","Fastening Method":"35-mm DIN rail mounting or wall mounting with plug-in flaps","at AC-15 at 24 V":"3A","at DC-13 at 24 V":"1A","Mounting Position":"vertical","2 at DC rated value":"24V","Product Designation":"Single data decoupling module","protection class IP":"IP20","Of The Input Voltage":"DC","Design Of The Product":"SlimLine S22.5 - Module to beused in the IP20 control cabinet","Of The Input Voltages":"DC","Supplied Active Power":"120W","Ground Fault Detection":"Yes","With Core End Processing":"2x (0.25 ... 1.5 mm²)","suitable for AS-i Power24V":"Yes","Without Core End Processing":"2x (0.25 ... 1.5 mm²)","input current at DC maximum":"4.1A","AS-Interface data decoupling":"Yes","output current at DC maximum":"4A","Sequential Connected Time-Delay":"No","Design Of Short-Circuit Protection":"electronic","Test Function Of Signaling Contacts":"Yes","suitable for grounded AS-i networks":"Yes","Ambient Temperature During Operation":"-25 ... +70°C","at AWG cables for auxiliary contacts":"2x (24 ... 16)","reference code acc. to DIN EN 61346-2":"A","adapted for non-grounded AS-i networks":"Yes","display version as status display by LED":"yes","Property Of The Output Short-Circuit Proof":"Yes","number of outputs for AS-Interface maximum":"1","Suitability For Use Safety-Related Circuits":"Yes","protocol is supported AS-Interface protocol":"Yes","relative humidity at 25 °C during operation maximum":"70%","Number Of Electrical Connections For Signaling Contact":"2","Installation Altitude At Height Above Sea Level Maximum":"2 000m","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded terminals","number of switching contacts as NO contact for signaling function":"1","design of the switching contact as NO contact for signaling function":"yes","Product Function Removable Terminal For Auxiliary And Control Circuit":"Yes","Mechanical Service Life (Switching Cycles) Of The Signaling Contacts Typical":"1 000 000","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"2.5 ... 4A"}},"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=505364&mlfb=3RK1901-1DG12-1AA0"},"ai":{"faq":[{"question":"What is the depth of the 3RK1901-1DG12-1AA0?","answer":"The depth is 121.2mm, which is the dimension to check for enclosure clearance behind the DIN rail."},{"question":"What wire sizes does the 3RK1901-1DG12-1AA0 accept?","answer":"It accepts 2x (0.25... 1.5 mm²) solid or stranded conductors, with or without core-end processing, or 2x (24... 16) AWG."},{"question":"What compliance documentation is available for this module?","answer":"The evidence does not list specific compliance documents (RoHS, REACH, UL, IEC) for this order code. The module is designed for use in IP20 control cabinets and is suitable for safety-related circuits per its specifications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1901-1DG12-1AA0","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/3RK1901-1DG12-1AA0 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}}