{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK3211-1AA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK3211-1AA10","canonicalUrl":"https://aoctrl.com/siemens/3RK3211-1AA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RK3211-1AA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS modular safety system, 3RK3211-1AA10, 4/8 F-DI fail-safe digital input module, 24 V DC, SIL 3 / PL e / Cat 4, DIN-rail mount, screw terminals, IP20.","salesMarkdown":"The Siemens 3RK3211-1AA10 is a SIRIUS modular safety system input module with 8 fail-safe digital inputs (F-DI), designed as a 4/8 F-DI configuration — four of the eight inputs can be used in 2-channel mode for redundant wiring to e-stops, light curtains, or guard door switches, while the remaining four handle single-channel signals like enabling switches or selector switches. Rated SIL 3 per IEC 61508 and IEC 62061, Category 4 per EN 954-1 and EN ISO 13849-1, and Performance Level e per ISO 13849-1 — this is the top safety integrity tier for a modular safety system, meaning it can be used in the highest-risk control loops where a single fault must not cause loss of the safety function and the probability of dangerous failure per hour is below 10⁻⁷. Height is 102 mm; the screw terminals accept standard ferrule-terminated conductors, and the IP20 enclosure keeps live parts finger-safe once the cabinet door is closed. ## Lifecycle and sourcing — active, not orphaned ## What it evaluates — built-in logic for common safety functions The module supports monitored start-up, EMERGENCY OFF function, protective door monitoring, enabling switch evaluation, selector switch evaluation, and two-hand operator panel evaluation — all handled internally without needing a separate logic module for these standard safety functions. It has no parameterizable outputs — this is a pure input module — and the 8 inputs are all safety-related; there are no non-safety or 2-channel-only inputs to confuse. ## Environmental and EMC robustness Rated for shock resistance of 15 g / 11 ms and vibration resistance of 0.75 mm across 5 to 500 Hz per IEC 60068-2-6, so it holds up on machines with moderate vibration — conveyor drives, press feeders, packaging lines. Surge voltage resistance rated at 500 V, and burst immunity at 2 kV on power ports per IEC 61000-4-4 — typical for industrial control panels without dedicated surge suppression on the safety circuit. Operates in 10 to 95 % relative humidity and pollution degree 3 environment — suitable for unconditioned plant-floor cabinets, not just climate-controlled rooms.","metaTitle":"Siemens 3RK3211-1AA10 SIRIUS Safety Module, 8 F-DI, SIL 3, P","metaDescription":"Siemens 3RK3211-1AA10 SIRIUS modular safety system input module. 8 fail-safe digital inputs, 24 V DC, SIL 3 / PL e, Cat 4. DIN-rail mount, IP20. Active production — sourced to orde","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Safety Relays"],"specifications":{"Depth":"124 mm","Width":"22.5 mm","title":"3RK3211-1AA10","Height":"102 mm","2-Channel":"0","description":"SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 4/8 F-DI, 24 V DC Can be parameterized via MSS ES 22.5 mm overall width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable","Safety-Related":"8","Single Channel":"0","Type Of Voltage":"DC","lifecycle_stage":"current","Fastening Method":"DIN rail","Product Category":"Modular Safety System","Shock Resistance":"15g / 11 ms","Mounting Position":"vertical","Monitored Start-Up":"Yes","Non-Safety-Related":"0","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","protection class IP":"IP20","Design Of The Product":"4/8 F-DI","EMERGENCY OFF function":"Yes","according to IEC 61508":"3","according to IEC 62061":"3","Parameterizable Outputs":"No","Safety-Related 2-Channel":"0","Protective Door Monitoring":"Yes","Evaluation: Enabling Switch":"Yes","Evaluation: Selector Switch":"Yes","Substance Prohibitance (Date)":"05/01/2012","Type Of Electrical Connection":"screw-type terminals","Insulation Voltage Rated Value":"50 V","category according to EN 954-1":"4","Relative Humidity During Operation":"10 ... 95 %","Evaluation: Two-Hand Operator Panel":"Yes","Surge Voltage Resistance Rated Value":"500 V","category according to EN ISO 13849-1":"4","due to burst according to IEC 61000-4-4":"2 kV (power ports)","reference code according to IEC 81346-2":"K","Touch Protection Against Electrical Shock":"finger-safe","control supply voltage 1 at DC rated value":"24 V","performance level (PL) according to ISO 13849-1":"e","vibration resistance according to IEC 60068-2-6":"5 ... 500 Hz: 0.75 mm","PFHD with high demand rate according to EN 62061":"1.89E-9 1/h","Evaluation: Electro-Sensitive Protective Equipment":"Yes","electrostatic discharge according to IEC 61000-4-2":"4 kV contact discharge / 8 kV air discharge","Number Of Outputs For Testing Contact-Based Sensors":"2","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Design Of The Fuse Link For Short-Circuit Protection Of Non-Solid-State Switching Element Required":"NH Typ 3NA, DIAZED Typ 5SB, NEOZED Typ 5SE"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/769a5349229d4319136b1e54b7c3628b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=123487&mlfb=3RK3211-1AA10"},"ai":{"faq":[{"question":"Where can I buy 3RK3211-1AA10 and how do I get a price?","answer":"This module is sourced to order against an RFQ through independent distribution — submit a request for quote to confirm current availability and pricing."},{"question":"Will 3RK3211-1AA10 drop into a panel specified around 3RT5056-8AP38-0PR0 without rewiring?","answer":"No — the 3RT5056-8AP38-0PR0 is a contactor, not a safety input module. The 3RK3211-1AA10 serves a completely different function (fail-safe digital inputs vs. power switching) and cannot be swapped in without redesigning the safety circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK3211-1AA10","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/3RK3211-1AA10 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:41:02.429Z","lastPublished":"2026-07-20T14:41:02.429Z","indexable":true}}