{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK2402-2CG00-2AA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK2402-2CG00-2AA2","canonicalUrl":"https://aoctrl.com/siemens/3RK2402-2CG00-2AA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RK2402-2CG00-2AA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens AS-i Slimline SC22.5, 3RK2402-2CG00-2AA2, 4 digital inputs PNP Type 2, 4 relay outputs NO, 22.5 mm wide, IP20, current production.","salesMarkdown":"The Siemens 3RK2402-2CG00-2AA2 is a Slimline Compact I/O module for AS-Interface, designated SC22.5, packing 4 digital inputs (PNP Type 2) and 4 relay outputs (NO contacts) into a 22.5 mm wide housing. It's an A/B slave per AS-i Spec. 3.0 with profile S-7.A.7 and a fixed ID1 code of 7. This is the module you spec when you need mixed I/O on an AS-i network without pulling a separate control cabinet bus — the relay outputs handle small motor starters, contactor coils, or signal lamps directly, while the PNP inputs accept standard 3-wire sensors. ## Power supply and sensor feed — the practical split The module draws 200 mA from the AS-i loop, or 500 mA when an auxiliary supply (Uaux) is connected. That extra 300 mA headroom matters when you're powering sensors from the module's own feed: the AS-i bus alone supplies up to 2 A for sensors, but if you need more than that or want to isolate sensor power from the network, you run a separate 20–30 V DC auxiliary feed and get up to 4 A for external loads. The relay outputs are rated 1 A at 24 V, 0.2 A at 110 V, 0.1 A at 230 V, with a thermal current of 5 A — so keep the switching loads within those limits, especially on inductive coils where inrush can exceed the steady-state rating. ## Mounting and environment — panel fit Screw and snap-on mounting on DIN rail, 22.5 mm wide, 100 mm high, 120 mm deep. IP20, so it lives inside a control cabinet — not on the machine frame. Shock rated at 15g / 11 ms for the module alone, 10g / 11 ms with the device connector attached. Accepts 0.5–1.5 mm² solid or stranded wire (20–16 AWG), 2- and 3-wire sensor connection. Address is set via the front facing socket, with yellow LEDs for I/O status.","metaTitle":"Siemens 3RK2402-2CG00-2AA2 AS-i Slimline I/O, 4DI/4RQ","metaDescription":"Siemens 3RK2402-2CG00-2AA2 AS-i Slimline SC22.5 module: 4 digital inputs PNP, 4 relay outputs NO. 22.5 mm wide, IP20, current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Note":"200 mA with supply via AS interface / 500 mA with supply via Uaux","Depth":"120 mm","Solid":"1x (0.5 ... 1.5 mm²), 2x (0.5 ... 1.5 mm²)","Width":"22.5 mm","Height":"100 mm","at 24 V":"1 A","ID1 code":"7; Setting cannot be changed","at 110 V":"0.2 A","at 230 V":"0.1 A","During Storage":"-40 ... +85 °C","Thermal Current":"5 A","at 30 V maximum":"300 mA","lifecycle_stage":"current","During Operation":"-25 ... +70 °C","Fastening Method":"screw and snap-on mounting","Shock Resistance":"15g / 11 ms (modules) or 10g / 11 ms (modules with device connector)","for AS-Interface":"2 A","Other Information":"Sensor supply via Uaux: Auxiliary feed 20 to 30 V DC required to supply the sensor. Sensor supply via AS-i: No additional power required.","from AS-interface":"8.5 V","Product Designation":"Slimline Compact I/O module for use in the control cabinet","protection class IP":"IP20","for AWG cables solid":"1x (20 ... 16), 2x (20 ... 16)","Design Of The Product":"AS-i SC22.5, 4DI/4RQ A/B","Number Of Analog Inputs":"0","according to EN 61346-2":"K","for AWG cables stranded":"1x (20 ... 16), 2x (20 ... 16)","Design Of The Slave Type":"A/B slave (Spec. 3.0)","Number Of Analog Outputs":"0","Number Of Digital Inputs":"4","Type Of Switching Output":"Relays, NO contacts","Number Of Digital Outputs":"4","AS-Interface slave profile":"S-7.A.7","Type Of Input Characteristic":"PNP Type 2","Type Of Connection Technology":"2- and 3-wire technology","For External Auxiliary Voltage":"4 A","From External Auxiliary Voltage":"1 V","at 24 V with AS-i Power24V maximum":"300 mA","type of address setting of AS-i slaves":"via front addressing socket","As Status Display Of The Inputs/Outputs":"Yellow LED","Number Of Digital Inputs Safety-Related":"0","Type Of Voltage Supply For Power Supply":"AS-Interface / U_AUX switchable","Finely Stranded With Core End Processing":"1x (0,25 ... 1,0 mm²), 2x (0,25 ... 1,0 mm²)","Property Of The Output Short-Circuit Proof":"No","Finely Stranded Without Core End Processing":"1x (0.5 ... 1.5 mm²), 2x (0.5 ... 1.5 mm²)","product function suitable for AS-i Power24V":"Yes","protocol is supported AS-Interface protocol":"Yes","Type Of Electrical Connection Of The Inputs And Outputs":"Spring-loaded terminals","operating voltage according to AS-Interface specification":"18 ... 31.6 V","Property Of The Sensor Supply Short-Circuit And Overload Resistant":"Yes","ampacity of the sensor supply for all inputs at ambient temperature 40 °C":"500 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=552804&mlfb=3RK2402-2CG00-2AA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK2402-2CG00-2AA2/alternatives.json"},"ai":{"faq":[{"question":"What is the supply current requirement for this module?","answer":"It draws 200 mA when powered solely via the AS-Interface bus, and 500 mA when an auxiliary supply (Uaux) is connected."},{"question":"What type of outputs does this module have?","answer":"Four relay outputs with normally open (NO) contacts. Rated 1 A at 24 V, 0.2 A at 110 V, 0.1 A at 230 V."},{"question":"Does this module require an external sensor supply?","answer":"Not necessarily. Sensors can be powered directly from the AS-i bus (up to 2 A available). If more current or isolation is needed, a separate 20–30 V DC auxiliary feed provides up to 4 A for sensors."},{"question":"What is the physical size and mounting method?","answer":"22.5 mm wide, 100 mm high, 120 mm deep. Screw and snap-on mounting onto DIN rail. IP20 rated for cabinet installation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK2402-2CG00-2AA2","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/3RK2402-2CG00-2AA2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}