{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1908-0AP00-0HP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1908-0AP00-0HP0","canonicalUrl":"https://aoctrl.com/siemens/3RK1908-0AP00-0HP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1908-0AP00-0HP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC BaseUnit, 3RK1908-0AP00-0HP0, with AC infeed and F-DI loop-through, spring-loaded push-in terminals, 24 V DC, 7 A, DIN rail mount.","salesMarkdown":"## BaseUnit with AC infeed and F-DI loop-through The Siemens 3RK1908-0AP00-0HP0 is a SIMATIC BaseUnit designed for safety-related applications, integrating AC infeed and F-DI (fail-safe digital input) loop-through in a single DIN-rail mountable package. It accepts a 24 V DC supply (20.4 to 28.8 V) and is rated for a maximum ampacity of 7 A, making it suitable for powering downstream safety modules and looping the sensor supply through multiple bases without extra wiring. The 7 A ampacity limit governs how many safety I/O modules you can daisy-chain from one infeed — exceed it and you risk voltage drop or thermal trip on the base. The 24 V DC supply tolerance (20.4–28.8 V) covers standard industrial power rails; no separate voltage regulator needed. Spring-loaded push-in terminals accept 0.5–2.5 mm² solid or 18–10 AWG stranded, so you land field wiring without screw torque or ferrule crimping. The 6 kV surge voltage rating means the base can withstand transient spikes common on long cable runs without damaging the backplane electronics. ## Mechanical integration Mount vertically or horizontally. Ambient operating range is -25 to +60 °C with derating above 40 °C; storage and transport tolerance extends to -40 to +70 °C. Shock rated at 6g / 11 ms and vibration at 2g up to 500 Hz — fine for machine-mounted enclosures near conveyors or presses. Pollution degree 2 covers typical industrial control rooms with non-conductive dust.","metaTitle":"Siemens 3RK1908-0AP00-0HP0 SIMATIC BaseUnit, 24 V DC, 7 A, D","metaDescription":"Siemens 3RK1908-0AP00-0HP0 SIMATIC BaseUnit with AC infeed and F-DI loop-through. 24 V DC, 7 A, DIN rail mount. Active production, sourced to order. Request quote.","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","Height":"215 mm","Upwards":"50 mm","Downwards":"50 mm","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":"DIN rail","Product Category":"Accessories","Shock Resistance":"6g / 11 ms","Mounting Position":"vertical, horizontal","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","Design Of The Product":"with AC infeed, with F-DI loop-through","For Main Current Circuit":"spring-loaded terminals (push-in)","Number Of Digital Inputs":"0","for AWG cables for supply":"1x 18 ... 10","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","Operating Voltage Rated Value":"500 V","Substance Prohibitance (Date)":"04/15/2016","Insulation Voltage Rated Value":"500 V","operating voltage of AC supply":"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 %","air pressure according to SN 31205":"900 ... 1 060 hPa","supply voltage 1 at DC rated value":"24 V","Surge Voltage Resistance Rated Value":"6 kV","Type Of Voltage Of The Supply Voltage":"DC","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"1x 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":"1x 0,5 ... 2,5 mm²","operational current at AC at 400 V rated value":"32 A; Derating, see Manual","Installation Altitude At Height Above Sea Level Maximum":"4 000 m; For derating see manual","type of connectable conductor cross-sections for AWG cables for load-side outgoing feeder":"1x 20 ... 12"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"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=1389406&mlfb=3RK1908-0AP00-0HP0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1908-0AP00-0HP0/alternatives.json"},"ai":{"faq":[{"question":"What is the supply voltage and current rating for this BaseUnit?","answer":"It operates on 24 V DC (20.4–28.8 V range) and is rated for a maximum ampacity of 7 A."},{"question":"What wire sizes and terminal type does 3RK1908-0AP00-0HP0 accept?","answer":"Spring-loaded push-in terminals accept 0.5–2.5 mm² solid or 18–10 AWG stranded conductors."},{"question":"Where can I buy 3RK1908-0AP00-0HP0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1908-0AP00-0HP0","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/3RK1908-0AP00-0HP0 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}}