{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1405-0BQ20-0AA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1405-0BQ20-0AA3","canonicalUrl":"https://aoctrl.com/siemens/3RK1405-0BQ20-0AA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1405-0BQ20-0AA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens ASIsafe K45F compact module, 3RK1405-0BQ20-0AA3, 2 safe digital inputs + 2 standard solid-state outputs, IP67, M12 connectors, AS-Interface powered.","salesMarkdown":"The Siemens 3RK1405-0BQ20-0AA3 is an ASIsafe compact module in the K45F form factor — 2 safe digital inputs for mechanical switching contacts, paired with 2 standard solid-state outputs. It sits on a DIN rail or wall mount (mounting plate 3RK1901-2EA00 or 3RK1901-2DA00 ordered separately) and connects via four M12 sockets. The module draws its 24 V DC output supply from the AS-Interface bus, so no separate auxiliary power is needed for the outputs. IP67 means the module and its M12 connectors tolerate washdown and dust — suitable for food-and-bev lines, packaging floors, or outdoor conveyor sections where hose-down cleaning is routine. The 34 mm depth and 45 mm width fit a standard DIN-rail footprint; the 80 mm height clears most enclosure lids. Each safe input draws a minimum of 5 mA at signal <1>, which is typical for mechanical contact sensors — no additional pull-up resistor needed. The solid-state outputs are rated 0.15 A each, short-circuit proof, so they can drive small indicators, solenoid pilot valves, or PLC input cards directly. The AS-Interface bus supplies 26.5 to 31.5 V DC to the module, and the module draws up to 250 mA from the bus total.","metaTitle":"Siemens 3RK1405-0BQ20-0AA3 ASIsafe K45F, 2 F-DI/2 DO, IP67","metaDescription":"Siemens 3RK1405-0BQ20-0AA3 ASIsafe compact module K45F: 2 safety inputs (mechanical sensors), 2 standard solid-state outputs, IP67, AS-Interface powered. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Type":"2 inputs, safe, 2 outputs, standard","Depth":"34mm","Width":"45mm","title":"3RK1405-0BQ20-0AA3","Height":"80mm","Sensors":"mechanical switching contact","Watchdog":"built-in","Addressing":"front addressing socket","ID/ID2 code":"B/0","description":"ASIsafe compact module K45F digital safety, 2 F-DI/2 DQ, IP67 2 x input for mechanical sensors 2 x standard output 24 V DC Output supply from U_ASI 4 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":"7","Number I/O sockets":"4","protection class IP":"IP67","switching level Low":"contact open","Induction Protection":"built-in","switching level High":"contact closed","Design Of The Product":"Safe compact module K45F, 2F-DI/2DO","Short-Ciruit Protection":"built-in","Type Of Switching Output":"solid state","Number Of Digital Outputs":"2","Type Of Voltage Of Output Voltages":"DC","display of AS-Interface/diagnostics":"green/red LED","AS interface total current input max":"250mA","Outputs external power supply 24 V DC":"via AS-Interface","reference code acc. to DIN EN 61346-2":"A","Number Of Digital Inputs Safety-Related":"2","Design Of The Pin Assignment Of The Inputs":"special assignement","Property Of The Output Short-Circuit Proof":"Yes","Design Of The Pin Assignment Of The Outputs":"standard 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","Output Current At Digital Output For Signal <1> Rated Value":"0.15A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$133.35","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/796a75a34d7e37c16e647cdf002f9f74.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=235362&mlfb=3RK1405-0BQ20-0AA3"},"ai":{"faq":[{"question":"What are the key specs for fit?","answer":"Type: 2 safe inputs (mechanical contacts), 2 standard solid-state outputs. IP67. M12 connectors. AS-Interface powered, 26.5–31.5 V DC bus supply. Outputs rated 0.15 A each, short-circuit proof. Dimensions: 45 x 80 x 34 mm (W x H x D)."},{"question":"What mounting hardware is needed?","answer":"Mounting plate 3RK1901-2EA00 or 3RK1901-2DA00 must be ordered separately for wall mounting. Standard rail mounting is supported directly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1405-0BQ20-0AA3","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/3RK1405-0BQ20-0AA3 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}}