{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK3211-2AA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK3211-2AA10","canonicalUrl":"https://aoctrl.com/siemens/3RK3211-2AA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RK3211-2AA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS modular safety system, 4/8 F-DI, 8 safety-related inputs, 24 V DC, SIL 3, Cat 4, PL e, spring-loaded terminals, IP20, 22.5 x 105 x 124 mm.","salesMarkdown":"## Safety System for Hazard Zones The Siemens SIRIUS 3RK3211-2AA10 is a modular safety system with 8 safety-related inputs, designed to evaluate emergency stop, protective door monitoring, enabling switches, selector switches, and two-hand operator panels. It is 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 — the highest safety integrity levels for guarding applications. The 24 V DC control supply powers the evaluation logic and the spring-loaded terminal connections accept 0.2–2.5 mm² conductors. ## What the Safety Ratings Mean for Fit SIL 3 (IEC 61508) and PL e (ISO 13849-1) mean this module is designed for safety functions where a failure could cause serious injury — the architecture includes redundancy and self-diagnostics to achieve a probability of dangerous failure per hour below 10⁻⁷. Category 4 (EN 954-1 / EN ISO 13849-1) confirms the single fault tolerance and continuous monitoring. The 8 safety-related inputs can be configured as single-channel or two-channel, but the module does not have dedicated 2-channel inputs — it evaluates the input pairs through the logic. The 4/8 F-DI designation means 4 fail-safe digital inputs are available, expandable to 8 with the internal evaluation. The EMERGENCY OFF function is integrated, so no separate emergency stop relay is needed in the safety circuit. The 22.5 mm width and 124 mm depth fit a standard single-module DIN-rail footprint — no special backplate or adapter required. Vibration resistance per IEC 60068-2-6 at 5–500 Hz, 0.75 mm amplitude, and shock resistance of 15 g for 11 ms cover most machine-mounted applications.","metaTitle":"Siemens 3RK3211-2AA10 SIRIUS Modular Safety System, 24 V DC,","metaDescription":"Siemens SIRIUS 3RK3211-2AA10 modular safety system with 8 safety-related inputs, 24 V DC, SIL 3, Cat 4, PL e. 22.5 mm wide, DIN rail mount, spring-loaded terminals. Available to or","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":"3RK3211-2AA10","Height":"105 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 Spring-type 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":"spring-loaded 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":"$190.50","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8ed97e98cd4a1fd475cbbb6cedb435c0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=465493&mlfb=3RK3211-2AA10"},"ai":{"faq":[{"question":"What is the width of 3RK3211-2AA10?","answer":"The width is 22.5 mm, fitting a standard single-module DIN-rail slot."},{"question":"What safety integrity levels does 3RK3211-2AA10 meet?","answer":"It meets 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."},{"question":"Where can I buy 3RK3211-2AA10?","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":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK3211-2AA10","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/3RK3211-2AA10 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}}