{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK3321-1AA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK3321-1AA10","canonicalUrl":"https://aoctrl.com/siemens/3RK3321-1AA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RK3321-1AA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RK3321-1AA10 expansion module, 8 digital inputs, 24 VDC, screw-type terminals, DIN-rail mount, IP20, 22.5 mm width.","salesMarkdown":"The Siemens 3RK3321-1AA10 is a SIRIUS modular safety system expansion module providing 8 digital inputs in a 22.5 mm wide DIN-rail housing. It operates on a 24 VDC control supply and connects via screw-type terminals. The module is rated IP20 with finger-safe touch protection, suited for installation inside a control cabinet. The 8 digital inputs expand a SIRIUS safety system's monitoring capacity — each input can evaluate a safety sensor (e-stop, guard switch, light curtain) in single- or dual-channel wiring. The 24 VDC supply is standard for safety controllers; the module draws its power from the backplane bus, so no separate power feed is needed. At 22.5 mm wide, it occupies one standard DIN-rail slot, matching the footprint of other SIRIUS modules. The IP20 rating means it is not sealed against moisture or dust ingress — it must live inside a panel with at least IP54 enclosure protection. Shock resistance of 15g / 11 ms and vibration resistance of 0.75 mm at 5...500 Hz (per IEC 60068-2-6) mean the module withstands typical industrial panel vibration from contactors and drives without loosening connections or intermittent faults. EMC immunity is specified: 2 kV burst on power ports (IEC 61000-4-4) and 4 kV contact / 8 kV air electrostatic discharge (IEC 61000-4-2). These levels are standard for industrial control cabinets and ensure the inputs do not false-trigger on nearby switching transients. The module carries a substance prohibition date of 05/01/2012, indicating RoHS compliance (EU RoHS 2011/65/EU). It is designed for pollution degree 3 environments (industrial, with conductive or dry non-conductive pollution). Maximum installation altitude is 2000 m above sea level.","metaTitle":"Siemens 3RK3321-1AA10 SIRIUS Expansion Module, 8 DI, 24 VDC,","metaDescription":"Siemens 3RK3321-1AA10 SIRIUS modular safety system expansion module with 8 digital inputs, 24 VDC, screw terminals, IP20, DIN-rail mount. Current lifecycle stage. Quoted to order.","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":"3RK3321-1AA10","Height":"102 mm","2-Channel":"0","description":"Siemens 3RK32/3RK33 series 3RK3321-1AA10 expansion module, 8 digital inputs, 22.5 mm width, DIN-rail mount, screw-type terminals, IP20, shock 15g / 11 ms.","Safety-Related":"0","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":"8 DI","EMERGENCY OFF function":"No","Parameterizable Outputs":"No","Safety-Related 2-Channel":"0","Protective Door Monitoring":"No","Evaluation: Enabling Switch":"No","Evaluation: Selector Switch":"No","Substance Prohibitance (Date)":"05/01/2012","Type Of Electrical Connection":"screw-type terminals","Insulation Voltage Rated Value":"50 V","Relative Humidity During Operation":"10 ... 95 %","Evaluation: Two-Hand Operator Panel":"No","Surge Voltage Resistance Rated Value":"500 V","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","vibration resistance according to IEC 60068-2-6":"5 ... 500 Hz: 0.75 mm","Evaluation: Electro-Sensitive Protective Equipment":"No","electrostatic discharge according to IEC 61000-4-2":"4 kV contact discharge / 8 kV air discharge","Number Of Outputs For Testing Contact-Based Sensors":"0","Installation Altitude At Height Above Sea Level Maximum":"2 000 m"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$152.40","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1f04ce7a42eda27b3e573d5d37402848.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=144159&mlfb=3RK3321-1AA10"},"ai":{"faq":[{"question":"Where can I buy 3RK3321-1AA10 and how is it quoted?","answer":"The module is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What are the key specifications of 3RK3321-1AA10?","answer":"It is an 8-input expansion module for the SIRIUS modular safety system, 22.5 mm wide, DIN-rail mount, screw terminals, 24 VDC supply, IP20, with shock and vibration resistance per IEC 60068."},{"question":"What compliance documentation does Siemens provide for 3RK3321-1AA10?","answer":"The module is RoHS compliant (substance prohibition date 05/01/2012) and designed for pollution degree 3 environments per IEC 60947-1."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK3321-1AA10","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/3RK3321-1AA10 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}}