{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF1244-1QV40-1BA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF1244-1QV40-1BA2","canonicalUrl":"https://aoctrl.com/siemens/3SF1244-1QV40-1BA2","factsUrl":"https://aoctrl.com/api/mcp/products/3SF1244-1QV40-1BA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3SF1244-1QV40-1BA2 mechanical safety switch, block housing, IP66/IP67, 24 V LED, positive opening, 0.1 mm repeat accuracy.","salesMarkdown":"The Siemens 3SF1244-1QV40-1BA2 is a SIRIUS mechanical safety switch with a 24 V LED indicator, designed for guard-door and position-sensing applications where a positive-opening contact is required per IEC 60947-5-1. The 0.1 mm repeat accuracy means the switch signals position consistently cycle after cycle — critical for safety circuits that must not drift. IP66/IP67 sealing lets it live on a washdown line or outdoors without a secondary enclosure. ## Integration Notes Mounts in any position via screw fixing; the 50 mm wide block housing fits standard machine-frame brackets. The M12 4-pin connector (pin 1 = ASI+, pin 3 = ASI-) carries both power and AS-Interface communication — no separate sensor cable needed. The slow-action, positive-opening contact ensures the NC circuit breaks even if the contacts weld, which is the core requirement for a safety-rated interlock.","metaTitle":"Siemens 3SF1244-1QV40-1BA2 SIRIUS Safety Switch, IP66/IP67,","metaDescription":"Siemens 3SF1244-1QV40-1BA2 SIRIUS mechanical safety switch with positive opening, 24 V LED, IP66/IP67, 0.1 mm repeat accuracy. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Safety Interlock Switches"],"specifications":{"of LED":"24 V","ID1 code":"F (hex, variable 0...F)","During Storage":"-40 ... +80 °C","Repeat Accuracy":"0.1 mm","lifecycle_stage":"current","Active Principle":"mechanical","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing","Circuit Principle":"slow-action contacts","Mounting Position":"any","Product Brand Name":"SIRIUS","Degree Of Pollution":"class 3","Product Designation":"Mechanical safety switches","Width Of The Sensor":"50 mm","protection class IP":"IP66/IP67","Length Of The Sensor":"89 mm","Design Of The Housing":"block, wide","Material Of The Enclosure":"plastic","Of The Optional Actuators":"3SE5000-0AV01 standard actuator, 3SE5000-0AV02 actuator with vertical fixing, 3SE5000-0AV03 actuator with transverse fixing, 3SE5000-0AV04 radius actuator left, 3SE5000-0AV05 universal actuator, 3SE5000-0AV06 radius actuator right","AS-Interface slave profile":"0.B.F","Design Of Plug-In Connection":"M12 plug, 4-pole: Pin 1 = ASI+ , Pin 2 = not assigned, Pin 3= ASI-, Pin 4 = not assigned","Substance Prohibitance (Date)":"03/01/2017","Type Of Electrical Connection":"M12 plug, fixed, 4-pole","Insulation Voltage Rated Value":"30 V","Design Of The Actuating Element":"without","Design Of The Switching Contact":"mechanical","Design Of The Switching Function":"positive opening","Product Function Positive Opening":"Yes","Suitability For Use Safety Switch":"Yes","Surge Voltage Resistance Rated Value":"0.8 kV","reference code according to IEC 81346-2":"B","Design Of The Housing According To Standard":"No","Number Of Switching Contacts Safety-Related":"1","Material Of The Enclosure Of The Switch Head":"plastic enclosure","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"0","shock resistance according to IEC 60068-2-27":"30g / 11 ms","vibration resistance according to IEC 60068-2-6":"0.35 mm/5g","Mechanical Service Life (Operating Cycles) Typical":"1 000 000","Minimum Actuating Force In Directions Of Actuation":"10 N","Design Of The Interface For Safety-Related Communication":"ASIsafe via M12 plug, channel 2 looped through to M12 socket on the right","type of voltage of the supply voltage of the optional LED display":"DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SF1244-1QV40-1BA2/alternatives.json"},"ai":{"faq":[{"question":"What is the ID1 code for 3SF1244-1QV40-1BA2?","answer":"The ID1 code is F (hex, variable 0...F), which sets the AS-Interface slave profile 0.B.F."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF1244-1QV40-1BA2","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/3SF1244-1QV40-1BA2 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}}