{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1908-0AP00-0FP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1908-0AP00-0FP0","canonicalUrl":"https://aoctrl.com/siemens/3RK1908-0AP00-0FP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1908-0AP00-0FP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC 3RK1908-0AP00-0FP0 BaseUnit, without infeed, F-DI, 1 digital input, push-in spring-loaded terminals, 500 V rated voltage, 75 mm depth, 30 mm width, 215 mm height.","salesMarkdown":"## SIMATIC F-DI BaseUnit — one channel, push-in wiring The 3RK1908-0AP00-0FP0 is a SIMATIC BaseUnit designed to host a fail-safe digital input (F-DI) module without integrated infeed — it supplies the module from the backplane bus, not a separate power terminal. It carries a single digital input channel with Type 1 characteristic per EN 61131-2, accepting 24 VDC nominal (20.4 to 28.8 V permissible range) with signal thresholds of 15–30 V for logic 1 and 0–5 V for logic 0. The terminal type matches both main current and auxiliary/control circuits. ## Panel fit and environmental envelope Mounting can be vertical or horizontal; allow 50 mm clearance above and below for airflow and wiring access. Vibration resistance is 15 mm at 6 Hz and 2 g up to 500 Hz; shock rated at 6 g for 11 ms — suitable for machine-mounted cabinets near rotating equipment. Pollution degree 2 (non-conductive, occasional condensation) and relative humidity 10–95 % non-condensing. The insulation voltage is rated 500 V between main and auxiliary circuits. ## Sourcing and compliance posture The substance prohibitance date of 15.04.2016 aligns with RoHS exemption phase-out timelines. No direct functional second-source exists from Siemens for this specific F-DI BaseUnit variant — the listed peer MPNs (6ES7513-1AL01-0AB0, 6ES7511-1AK02-0AB0, 6ES7511-1AL03-0AB0) are CPU modules in the S7-1500 family, not BaseUnits, and do not drop into the same panel position without a full backplane redesign.","metaTitle":"Siemens 3RK1908-0AP00-0FP0 BaseUnit, 1 DI, Push-in, 500 V","metaDescription":"Siemens SIMATIC 3RK1908-0AP00-0FP0 BaseUnit for F-DI module, 1 digital input, push-in terminals, rated 500 V. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"75 mm","Solid":"1x 0,5 ... 2,5 mm²","Width":"30 mm","title":"3RK1908-0AP00-0FP0","Height":"215 mm","Upwards":"50 mm","Downwards":"50 mm","description":"Base unit (BU30-MS6) with F-DI For ET 200SP motor starter Without infeed","During Storage":"-40 ... +70 °C","lifecycle_stage":"current","Ampacity Maximum":"7 A","During Operation":"-25 ... +60 °C; For derating see manual","During Transport":"-40 ... +70 °C","Fastening Method":"standard rail","Product Category":"Accessories","Shock Resistance":"6g / 11 ms","Mounting Position":"vertical, horizontal","at DC rated value":"24 V","Product Brand Name":"SIMATIC","Degree Of Pollution":"2","Maximum Permissible":"28.8 V","Minimum Permissible":"20.4 V","Product Designation":"BaseUnit","Vibration Resistance":"15 mm to 6 Hz; 2g to 500 Hz","for signal <1> at DC":"15 ... 30","Design Of The Product":"without infeed, F-DI","with signal <0> at DC":"0 ... 5 V","For Main Current Circuit":"spring-loaded terminals (push-in)","Number Of Digital Inputs":"1","Single Or Multi-Stranded":"0.5 ... 2.5 mm²","Size Of The Screwdriver Tip":"Standard screwdriver 0.6 mm x 3.5 mm","Type Of Connecting Terminal":"Push-in terminal","Shape Of The Screwdriver Tip":"Slot","Type Of Input Characteristic":"Type 1 in accordance with EN 61131-2","Operating Voltage Rated Value":"500 V","Substance Prohibitance (Date)":"15.04.2016","air pressure acc. to SN 31205":"900 ... 1 060 hPa","Insulation Voltage Rated Value":"500 V","For Auxiliary And Control Circuit":"spring-loaded terminals (push-in)","Between Main And Auxiliary Circuit":"500 V","Relative Humidity During Operation":"10 ... 95 %","reference code acc. to IEC 81346-2":"Q","supply voltage 1 at DC rated value":"24 V","Surge Voltage Resistance Rated Value":"6 kV","Type Of Voltage Of The Supply Voltage":"DC","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²","Number Of Poles For Main Current Circuit":"3","Type Of Voltage Of The Operating Voltage":"AC","Finely Stranded Without Core End Processing":"0.5 ... 2.5 mm²","operational current at AC at 400 V rated value":"32 A; Derating, see Manual","touch protection on the front acc. to IEC 60529":"finger-safe","protection class IP on the front acc. to IEC 60529":"IP20","Installation Altitude At Height Above Sea Level Maximum":"4 000 m; For derating see manual","AWG number at DC input as coded connectable conductor cross section":"20 ... 12","type of connectable conductor cross-sections at AWG cables for load-side outgoing feeder":"1x 20 ... 12"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$91.44","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=567110&mlfb=3RK1908-0AP00-0FP0"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RK1908-0AP00-0FP0?","answer":"The part carries a substance prohibitance date of 15.04.2016, indicating RoHS compliance under the applicable exemption roadmap. Standard Siemens documentation includes the declaration of conformity and material declaration on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1908-0AP00-0FP0","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/3RK1908-0AP00-0FP0 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}}