{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1105-1BG04-4CA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1105-1BG04-4CA0","canonicalUrl":"https://aoctrl.com/siemens/3RK1105-1BG04-4CA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1105-1BG04-4CA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS ASIsafe extended Safety monitor, 2 F-RO with integrated safe slave, 2 enabling circuits, 40 ms response, IP20, spring-loaded terminals.","salesMarkdown":"## ASIsafe safety monitor for safe AS-i outputs The Siemens 3RK1105-1BG04-4CA0 is an ASIsafe extended Safety monitor with two fail-safe relay outputs (F-RO) and an integrated safe AS-i slave. It provides two enabling circuits and is designed to control safe AS-i outputs in a safety loop. Rated for use up to Category 4 per EN 954-1, Performance Level e per EN ISO 13849-1, and SIL 3 per IEC 61508, this monitor suits guarding applications where a 40 ms maximum response time is acceptable for the safety function. The unit carries a 24 V control supply drawing 1 A, and its relay outputs are rated 3 A at DC-12 (24 V) and 3 A at AC-12 (250 V). The AC-12 rating covers resistive loads; the DC-12 rating covers resistive and slightly inductive DC loads. ## Mounting and wiring in the panel The 45 mm width takes one standard modular unit, and the 120 mm depth fits shallow enclosures. IP20 protection means it belongs inside a cabinet, not on the machine frame. All I/O connections use spring-loaded terminals — strip 8 mm, no screwdriver needed for the power or signal wiring. Removable terminal blocks simplify pre-wiring the panel before inserting the monitor. ## AS-Interface integration Supports the AS-Interface protocol natively, with the integrated safe slave communicating safety data over the same yellow flat cable as the standard AS-i slaves. No separate safety bus wiring is needed. The reference code per EN 61346-2 is F, classifying it as a protective device in the system schematic.","metaTitle":"Siemens 3RK1105-1BG04-4CA0 ASIsafe Safety Monitor, 2 F-RO, 4","metaDescription":"Siemens 3RK1105-1BG04-4CA0 ASIsafe extended Safety monitor with 2 enabling circuits, 40 ms response, up to SIL 3. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"24 V":"1A","Type":"2 enabling circuits","115 V":"0.1A","230 V":"0.05A","Depth":"120mm","Width":"45mm","Height":"108mm","During Storage":"-30 ... +70°C","lifecycle_stage":"current","During Operation":"-20 ... +60°C","Fastening Method":"screws / DIN rail","DC-12 (DC-1) 24 V":"3A","Response time max.":"40ms","protection class IP":"IP20","AC-12, 50/60 Hz 250 V":"3A","Design Of The Product":"safety monitor, with expanded functionality","Number Of Release Circuits":"2","reference code according to EN 61346-2":"F","protocol is supported AS-Interface protocol":"Yes","Type Of Electrical Connection Of The Inputs And Outputs":"spring-loaded terminals"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$830.58","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=229301&mlfb=3RK1105-1BG04-4CA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1105-1BG04-4CA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key safety ratings for 3RK1105-1BG04-4CA0?","answer":"It is rated for Category 4 (EN 954-1), PL e (EN ISO 13849-1), and SIL 3 (IEC 61508). The maximum response time is 40 ms."},{"question":"Does 3RK1105-1BG04-4CA0 support AS-Interface?","answer":"Yes, it supports the AS-Interface protocol and includes an integrated safe AS-i slave for safety communication over the standard AS-i cable."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1105-1BG04-4CA0","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/3RK1105-1BG04-4CA0 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}}