{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF3243-0XX40-0BA1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF3243-0XX40-0BA1","canonicalUrl":"https://aoctrl.com/siemens/3SF3243-0XX40-0BA1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF3243-0XX40-0BA1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3SF3243-0XX40-0BA1 communication-capable position switch, mechanical active principle, IP65, block housing EN 50047, 2NC positive opening contacts, AS-i insulation displacement connection.","salesMarkdown":"The 3SF3243-0XX40-0BA1: Rated IP65, the molded-plastic block housing conforms to EN 50047, making it suitable for washdown zones or dusty environments on automated lines. The separate actuator design and positive opening switching function (2 NC contacts, 0 NO) provide mechanically forced disconnection — the contacts are physically linked so that when the actuator is released, the NC circuit opens even if the contacts weld. This is the feature a safety circuit relies on for category 3/4 stop performance per EN 60204-1. The screw fixing method and block form factor (52 mm width per the description) mount directly to machine frames or standard EN 50047 brackets — no DIN rail, so plan for dedicated mounting holes in the panel layout. The 3SF3243-0XX40-0BA1 ships as a complete unit: the molded-plastic block housing with the integrated AS-i adapter and the separate actuator. The AS-i connection uses the insulation displacement method — no additional connector or terminal block needed for the bus drop. The screw fixing hardware is included for mounting to the machine frame or bracket. The separate actuator is supplied loose and must be mounted on the moving guard or door; alignment to the switch block is set during installation. No auxiliary contact blocks, mounting brackets, or AS-i power supplies are included — those are separate line items if the panel design requires them. The switch provides 2 NC positive-opening contacts; if the application needs NO or additional NC circuits, an auxiliary block (Siemens 3SE series) would need to be added as a separate order.","metaTitle":"Siemens 3SF3243-0XX40-0BA1 Communication-Capable Position Sw","metaDescription":"Siemens 3SF3243-0XX40-0BA1 communication-capable position switch with AS-i adapter. IP65, positive opening 2NC contacts, block housing per EN 50047. Current lifecycle stage. Quoted","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":"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/3SF3243-0XX40-0BA1/alternatives.json"},"ai":{"faq":[{"question":"What is the protection class and housing design?","answer":"IP65 protection class, molded-plastic block housing per EN 50047. Suitable for washdown and dusty environments. The separate actuator design allows mounting on moving guards."},{"question":"How is the AS-i connection made on this switch?","answer":"The AS-i connection uses the insulation displacement method — the bus cable is pressed into the connector without stripping or screw terminals. This is a tool-less, vibration-resistant connection for the AS-i network drop."},{"question":"Will 3SF3243-0XX40-0BA1 drop into a panel specified around 3RT5076-6AR36?","answer":"No. The 3RT5076-6AR36 is a SIRIUS power contactor (S12 size, 225 mm depth, screw terminals for main power circuits). The 3SF3243-0XX40-0BA1 is a position switch with a different mounting footprint, connection method (AS-i insulation displacement vs screw terminals), and safety function. Rewiring and panel reconfiguration would be required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF3243-0XX40-0BA1","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/3SF3243-0XX40-0BA1 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}}