{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1205-0BQ00-0AA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1205-0BQ00-0AA3","canonicalUrl":"https://aoctrl.com/siemens/3RK1205-0BQ00-0AA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1205-0BQ00-0AA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS ASIsafe compact module K45F, 3RK1205-0BQ00-0AA3, 2 fail-safe digital inputs for mechanical switching contacts, IP67, M12 connections.","salesMarkdown":"## What this ASIsafe module does The Siemens 3RK1205-0BQ00-0AA3 is a K45F compact safety module that puts two fail-safe digital inputs on the AS-Interface network. It accepts mechanical switching contacts — think safety gate switches, emergency-stop pushbuttons, or interlock limit switches — and reports their state over the AS-i bus. The inputs are safety-related (2 F-DI), meaning they can be used in a safety circuit up to SIL 3 / PL e depending on the system architecture. Power and data come from the AS-Interface cable itself: the module draws a maximum of 45 mA from the AS-i total current, operating across the standard AS-i voltage range of 26.5... 31.5 V DC. No separate supply needed. ## IP67 and mounting — where it goes Rated IP67, the module is built for washdown zones and wet environments — food processing, packaging lines, car-body paint shops. The housing is the K45 compact form factor (45 mm wide, 80 mm high, 34 mm deep). Connections are two M12 sockets for the sensor inputs. Front addressing socket lets you set the AS-i address with a standard handheld programmer. The yellow LEDs show input state; the green/red LED indicates AS-Interface communication and diagnostics. The 3RK1205-0BQ00-0AA3 carries an active lifecycle status from Siemens. It is a current-production catalog item, not a phase-out or NRND part. This is the module you spec into a new line without worrying about last-time-buy windows.","metaTitle":"Siemens 3RK1205-0BQ00-0AA3 ASIsafe K45F, 2 F-DI, IP67","metaDescription":"Siemens 3RK1205-0BQ00-0AA3 ASIsafe compact module, 2 safety digital inputs for mechanical sensors, IP67, 45 mA AS-i draw. Active lifecycle, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Type":"2 inputs, safe","Depth":"34mm","Width":"45mm","title":"3RK1205-0BQ00-0AA3","Height":"80mm","Sensors":"mechanical switching contact","Addressing":"front addressing socket","ID/ID2 code":"B/F","description":"ASIsafe compact module K45F digital safety, 2 F-DI, IP67 2 x input for mechanical sensors 2 x M12 socket Mounting plate 3RK1901-2EA00 or 3RK1901-2DA00 must be ordered separately","During Storage":"-40 ... +85°C","display of I/Os":"yellow LED","lifecycle_stage":"current","During Operation":"-25 ... +70°C","Fastening Method":"standard rail mounting/wall mounting using mounting plate for K45 compact module","I/O configuration":"0","Number I/O sockets":"2","protection class IP":"IP67","switching level Low":"contact open","switching level High":"contact closed","Design Of The Product":"Safe compact module K45F, 2F-DI","Type Of Voltage Of Output Voltages":"DC","display of AS-Interface/diagnostics":"green/red LED","AS interface total current input max":"45mA","reference code according to EN 61346-2":"A","Number Of Digital Inputs Safety-Related":"2","Design Of The Pin Assignment Of The Inputs":"special assignement","protocol is supported AS-Interface protocol":"Yes","Input Current At Digital Input For Signal <1> Minimum":"5mA","Type Of Electrical Connection Of The Inputs And Outputs":"M12","operating voltage according to AS-Interface spezification":"26.5 ... 31.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/769468c295bf61721f96c63f0539d1ab.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=48216&mlfb=3RK1205-0BQ00-0AA3"},"ai":{"faq":[{"question":"What is the 3RK1205-0BQ00-0AA3 used for?","answer":"It is an ASIsafe compact module that adds two safety-rated digital inputs for mechanical switching contacts to an AS-Interface network. Typical use is connecting safety gate switches, E-stops, or interlock limit switches in a washdown or IP67 environment."},{"question":"What sensors connect to the 3RK1205-0BQ00-0AA3?","answer":"The module is designed for mechanical switching contacts — dry contacts from safety switches, limit switches, or E-stop pushbuttons. The switching levels are defined as contact open (low) and contact closed (high)."},{"question":"Does the 3RK1205-0BQ00-0AA3 need a separate power supply?","answer":"No. It draws power and data from the AS-Interface cable, with a maximum total current draw of 45 mA across the standard AS-i voltage range of 26.5... 31.5 V DC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1205-0BQ00-0AA3","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/3RK1205-0BQ00-0AA3 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}}