{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF3257-6XX00-0BA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF3257-6XX00-0BA2","canonicalUrl":"https://aoctrl.com/siemens/3SF3257-6XX00-0BA2","factsUrl":"https://aoctrl.com/api/mcp/products/3SF3257-6XX00-0BA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3SF3257-6XX00-0BA2, communication-capable position switch, block housing EN 50047, IP65, molded-plastic, AS-i insulation displacement connection, 1 NC positive opening contact.","salesMarkdown":"The Siemens 3SF3257-6XX00-0BA2 is a communication-capable position switch in a block-style housing per EN 50047, fitted with an AS-i adapter for direct bus connection. The switching function uses positive opening (per IEC 60947-5-1), meaning the NC contact is mechanically forced open when the actuator is displaced — no spring reliance. That matters for safety circuits where a welded contact must not go undetected. Rated IP65, the molded-plastic enclosure handles washdown and dusty environments on conveyors, packaging lines, or machine guarding stations. The separate actuator design (actuator ordered separately) lets you match the operating head to the cam or flag profile on your machine. Connection is via AS-i insulation displacement method — no screw terminals on the switch body. The flat cable pierces into the adapter, which keeps the wiring tidy on a long AS-i drop line. One NC contact is built in; no NO contacts on this variant. ## Integration Notes Mounts via screw fixing (two M4 or equivalent) to a flat machine frame or bracket — no DIN rail. The block housing per EN 50047 is a standard 30 mm wide form factor, so it shares the same footprint as conventional limit switches from the same standard. The AS-i adapter is factory-integrated; no separate module to purchase. The switch communicates on the AS-i bus at the standard baud rate, reporting its NC state and receiving no output commands (it is a sensor, not an actuator).","metaTitle":"Siemens 3SF3257-6XX00-0BA2 Communication-Capable Position Sw","metaDescription":"Siemens 3SF3257-6XX00-0BA2 communication-capable position switch with AS-i adapter, IP65, 1NC positive opening contact. Current lifecycle stage. Sourced to order against RFQ.","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 50047","Material Of The Enclosure":"molded-plastic","Type Of Electrical Connection":"AS-i insulation displacement method","Design Of The Actuating Element":"separate actuator","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":"1","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/3SF3257-6XX00-0BA2/alternatives.json"},"ai":{"faq":[{"question":"What is the switching function on this position switch?","answer":"It uses positive opening (mechanical forced opening) on the NC contact, per IEC 60947-5-1. The NC contact is guaranteed to open when the actuator is operated, even if the contacts have welded."},{"question":"How is the AS-i connection made?","answer":"Via insulation displacement method — the AS-i flat cable is pressed into the adapter's contacts. No stripping or screw terminals required on the switch side."},{"question":"What is the enclosure rating and material?","answer":"IP65, molded-plastic housing. Suitable for washdown and dusty environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF3257-6XX00-0BA2","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/3SF3257-6XX00-0BA2 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}}