{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK3922-2AC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK3922-2AC10","canonicalUrl":"https://aoctrl.com/siemens/3RK3922-2AC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RK3922-2AC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS Modular Safety System starter kit, 3RK3922-2AC10, spring-loaded terminals, SIL CL 3 / PL e, 4.5 W, current production.","salesMarkdown":"## What this kit contains and where it goes The Siemens 3RK3922-2AC10 is a starter package for the SIRIUS Modular Safety System (MSS) 3RK3 platform. It bundles a central unit MSS Advanced with spring-loaded terminals, the Safety ES V1.0 Premium engineering software, and a USB PC cable — everything needed to begin configuring a safety application on a single DIN-rail assembly. Rated SIL CL 3 per IEC 61508 and PL e per ISO 13849-1, this central unit meets the highest discrete safety integrity level for a modular controller. That means it can handle safety functions up to Category 4 architecture — think emergency-stop chains, light-curtain monitoring, or two-hand control on a press — without needing a separate safety PLC. The PFHD of 7.0 × 10⁻⁹ 1/h (high demand rate per EN 62061) keeps the probability of dangerous failure well below the threshold for continuous-duty safety loops. ## Timing and diagnostics that affect your scan cycle The dark period of the common drivers is 1 ms at 24 V — that's the gap the MSS inserts between output groups during a test pulse, and it's short enough to avoid nuisance dropouts on most loads. Input delay at the digital inputs can reach 150 ms, and the acquisition time (the window the MSS uses to debounce a signal) maxes out at 60 ms. The internal diagnostics test interval runs up to 1 000 s, meaning the MSS performs a full self-test of its safety logic no less often than every 17 minutes. Termination is via spring-loaded terminals — no screwdriver torque required, just strip and push. The central unit draws 4.5 W operating power, so thermal load inside a sealed enclosure is modest.","metaTitle":"Siemens 3RK3922-2AC10 SIRIUS MSS Starter Kit, SIL CL 3","metaDescription":"Siemens 3RK3922-2AC10 SIRIUS Modular Safety System starter kit. SIL CL 3 / PL e. Spring-loaded terminals. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Safety Relays"],"specifications":{"title":"3RK3922-2AC10","at 24 V":"1 ms","description":"Starter package for modular Safety system 3RK3 Content: Central unit MSS Advanced connection: Spring-type terminal Software Safety ES V1.0 Premium, USB PC cable","lifecycle_stage":"current","Product Category":"Modular Safety System","Product Brand Name":"SIRIUS","Product Designation":"Starter kit","according to IEC 61508":"SIL CL 3","according to IEC 62061":"3","Operating Frequency Maximum":"1 000 1/h","Operating Power Rated Value":"4.5 W","Substance Prohibitance (Date)":"07/01/2006","Type Of Electrical Connection":"spring-loaded terminals","Dark Period Of The Common Drivers":"1 ms","reference code according to IEC 81346-2":"K","Input Delay Time At Digital Input Maximum":"150 ms","performance level (PL) according to ISO 13849-1":"e","Ingress Aquisition Time At Digital Input Maximum":"60 ms","PFHD with high demand rate according to EN 62061":"0.000000007 1/h","Mechanical Service Life (Switching Cycles) Typical":"10 000 000","Design Of The Contactless Switching Element Safety-Related":"P potential","Diagnostics Test Interval By Internal Test Function Maximum":"1 000 s"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/acc160b3d7c61b21f4da77f2aea9228d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=333225&mlfb=3RK3922-2AC10"},"ai":{"faq":[{"question":"Where can I buy 3RK3922-2AC10 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ to get a firm price and lead time."},{"question":"What is the 1 ms at 24 V rating on this central unit?","answer":"That 1 ms at 24 V is the dark period of the common drivers — the gap the MSS inserts between output groups during test pulses. It's short enough to avoid nuisance dropouts on most loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK3922-2AC10","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/3RK3922-2AC10 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}}