{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF3120-6EV00-0BA1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF3120-6EV00-0BA1","canonicalUrl":"https://aoctrl.com/siemens/3SF3120-6EV00-0BA1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF3120-6EV00-0BA1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3SF3120-6EV00-0BA1, communication-capable position switch, AS-i adapter, metal block housing EN 50041, IP65, roller lever, positive opening 2NC, screw fixing.","salesMarkdown":"The 3SF3120-6EV00-0BA1: The switch uses a mechanical active principle with a roller lever actuator and positive opening operation on both NC contacts — a mandatory safety feature for machine guarding circuits where the switch must reliably break the circuit even if the contacts weld. The positive opening function is explicitly listed as present on this unit. Housed in a painted metal block enclosure to EN 50041, rated IP65, this switch is suited for washdown or dusty environments on machine tools, conveyors, or automated assembly stations. The metal housing and screw fixing give it the mechanical robustness for direct mounting on machine frames where plastic housings would crack under vibration or impact. ## AS-i integration and signal integrity The AS-i insulation displacement method connects directly to the yellow AS-i flat cable, carrying power and data on the same two-wire bus. For the field technician: because the switch communicates over AS-i, the signal is digital from the actuator. No analog drift, no voltage-drop worries over long cable runs. The IP65 seal on the housing and the metal enclosure mean the AS-i electronics inside stay dry even with direct washdown — check the gland seal if you ever crack the housing open, but otherwise it's a sealed unit. The metal housing helps dissipate heat from the AS-i electronics; no derating needed within this band.","metaTitle":"Siemens 3SF3120-6EV00-0BA1 position switch, AS-i, IP65, 2NC","metaDescription":"Siemens 3SF3120-6EV00-0BA1 communication-capable position switch with AS-i adapter, IP65 metal housing, positive opening 2NC, roller lever. Current lifecycle stage. Sourced to orde","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/3SF3120-6EV00-0BA1/alternatives.json"},"ai":{"faq":[{"question":"What is the active principle of this switch?","answer":"The active principle is mechanical, with a roller lever actuator and positive opening operation on both NC contacts."},{"question":"What is the protection class of the 3SF3120-6EV00-0BA1?","answer":"The protection class is IP65, suitable for washdown and dusty environments."},{"question":"How does the AS-i connection work on this switch?","answer":"The switch uses an AS-i insulation displacement method — it pierces the yellow AS-i flat cable directly, carrying both power and data on the same two-wire bus without a separate I/O block."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF3120-6EV00-0BA1","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/3SF3120-6EV00-0BA1 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}}