{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF3120-8EV00-0BA1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF3120-8EV00-0BA1","canonicalUrl":"https://aoctrl.com/siemens/3SF3120-8EV00-0BA1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF3120-8EV00-0BA1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3SF3120-8EV00-0BA1, communication-capable position switch, AS-i adapter, 2NC, roller lever, metal housing, IP65, block design EN 50041.","salesMarkdown":"## Communication-capable position switch with AS-i interface The Siemens 3SF3120-8EV00-0BA1 is a communication-capable position switch that integrates directly onto an AS-i network via an insulation displacement connection, eliminating the need for parallel hardwiring of the safety contacts back to a controller. The positive opening mechanism (per IEC 60947-5-1) is mechanically forced — when the roller lever is actuated, the NC contacts open regardless of contact welding, which is the requirement for a safety-related limit switch in a Category 3 or 4 structure. The two NC contacts provide the normally-closed safety channel; there are no NO auxiliary contacts on this variant. ## IP65 metal housing for washdown environments Rated IP65, the metal enclosure (painted, block form per EN 50041) withstands hose-directed water and dust ingress — suitable for food-and-bev washdown zones, machining coolant splash, or outdoor conveyor transfer points. The screw fixing method and standard EN 50041 mounting pattern mean it replaces an existing block-style limit switch on the same footprint without drilling new holes. ## Roller lever actuator and operating range The snap roller lever actuator is suited for cam-actuated positions on linear slides, rotary indexing tables, or gate positions where the lever must follow a moving surface.","metaTitle":"Siemens 3SF3120-8EV00-0BA1 Position Switch, AS-i, IP65, 2NC","metaDescription":"Siemens 3SF3120-8EV00-0BA1 communication-capable position switch with AS-i adapter, IP65, positive opening, 2NC contacts. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Safety Interlock Switches"],"specifications":{"lifecycle_stage":"current","Active Principle":"mechanical","Fastening Method":"screw fixing","Product Designation":"communication-capable position switch","protection class IP":"IP65","Design Of The Housing":"block, EN 50041","Coating Of The Enclosure":"painted","Material Of The Enclosure":"metal","Type Of Electrical Connection":"AS-i insulation displacement method","Design Of The Actuating Element":"roller lever","Design Of The Switching Function":"positive opening","Product Function Positive Opening":"Yes","Ambient Temperature During Operation":"-25 ... +60 °C","reference code according to IEC 81346-2":"B","Design Of The Housing According To Standard":"Yes","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SF3120-8EV00-0BA1/alternatives.json"},"ai":{"faq":[{"question":"What is the 3SF3120-8EV00-0BA1 used for?","answer":"It is a communication-capable position switch with an AS-i interface, used to detect the position of a moving machine part (e.g., a guard door, linear slide, or rotary cam) and report its status over the AS-i bus. The positive opening contacts provide a safety-rated feedback channel for Category 3/4 circuits."},{"question":"How do I get current pricing and availability for 3SF3120-8EV00-0BA1?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF3120-8EV00-0BA1","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/3SF3120-8EV00-0BA1 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}}