{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1105-1BG04-2CA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1105-1BG04-2CA0","canonicalUrl":"https://aoctrl.com/siemens/3RK1105-1BG04-2CA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1105-1BG04-2CA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens ASIsafe extended Safety monitor, 2 F-RO, 2 enabling circuits, IP20, spring-type terminals, 40ms response time, up to Category 4 / PL e / SIL 3.","salesMarkdown":"## Safety monitor for AS-Interface safety networks The Siemens 3RK1105-1BG04-2CA0 is an ASIsafe extended safety monitor with expanded functionality, designed to supervise safety circuits on an AS-Interface network. It provides 2 enabling circuits (2 F-RO outputs) and achieves a maximum response time of 40 ms, making it suitable for guarding applications where fast reaction to a safety demand is required. 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 integrates into safety-rated control systems for machinery guarding, press lines, and automated assembly cells where a safety-rated stop is required within the AS-Interface loop. The 24 V control supply draws 1 A — this is the current the monitor pulls from the AS-Interface power supply or an auxiliary 24 VDC source. For a field-service tech isolating a fault: if the 24 V rail is sagging, this monitor's draw is a known load to account for. The 115 V and 230 V ratings (0.1 A and 0.05 A respectively) are for the enabling circuit outputs — these are the contact ratings for switching loads at those voltages. The DC-12 (DC-1) 24 V rating of 3 A and the AC-12 250 V rating of 3 A define the maximum continuous current the safety outputs can carry under resistive loads. For a controls integrator: if your enabling circuit drives a contactor coil or a pilot light, stay within these limits. The 40 ms response time is the maximum delay from a safety input demand to the outputs opening — critical for stopping distance calculations in safeguarding applications. IP20 rated, so it belongs in a clean, dry control cabinet — not on the machine frame in a washdown zone. I/O connections use spring-loaded terminals — no screwdriver needed for wiring, which speeds panel assembly and reduces loose-connection callbacks. The reference code per EN 61346-2 is F, meaning it's classified as a protective device in the system documentation.","metaTitle":"Siemens 3RK1105-1BG04-2CA0 ASIsafe Safety Monitor, 2 F-RO, I","metaDescription":"Siemens 3RK1105-1BG04-2CA0 ASIsafe extended safety monitor with 2 enabling circuits, 2 F-RO, 40ms response time, IP20, spring terminals. Up to SIL 3, PL e. Current production.","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","title":"3RK1105-1BG04-2CA0","Height":"108mm","description":"ASIsafe extended Safety monitor 2 F-RO 2 enabling circuits IP20, with spring-type terminal removable terminals Safe output relay Response time maximum 40 ms Monitor type 4, Version 3 Can be used up to Category 4 (EN954-1) up to PL E (EN ISO 13849-1) up to SIL 3 (IEC 61508)","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":"$741.68","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b7b857c66b394104bea397eadf10628f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=61696&mlfb=3RK1105-1BG04-2CA0"},"ai":{"faq":[{"question":"What are the key ratings for this safety monitor?","answer":"24 V control supply draws 1 A. Safety outputs rated DC-12 24 V 3 A and AC-12 250 V 3 A. Maximum response time is 40 ms. Supports up to Category 4 / PL e / SIL 3."},{"question":"What type of terminals does it use?","answer":"Spring-loaded terminals for all I/O connections. No screwdriver required; strip length per manufacturer spec for the wire gauge used."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1105-1BG04-2CA0","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/3RK1105-1BG04-2CA0 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}}