{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF1124-1KA00-1BA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF1124-1KA00-1BA2","canonicalUrl":"https://aoctrl.com/siemens/3SF1124-1KA00-1BA2","factsUrl":"https://aoctrl.com/api/mcp/products/3SF1124-1KA00-1BA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS mechanical safety switch, 3SF1124-1KA00-1BA2, block housing, IP66/IP67, M12 plug, ASIsafe, 24 V LED, positive-opening contacts.","salesMarkdown":"The Siemens 3SF1124-1KA00-1BA2 is a SIRIUS mechanical safety switch with a positive-opening contact set — the kind you spec into a guard-door interlock or a hinged access panel where you need a hard-wired, non-defeatable break in the safety circuit. It carries one safety-related NC contact and two auxiliary NC contacts, all slow-action, so the switching state is predictable at low speeds. The housing is metal with a cathodic dip coating, rated IP66/IP67, which means it handles washdown environments and outdoor exposure without the housing corroding through. Communication goes over AS-Interface via a 4-pin M12 plug — Pin 1 is ASI+, Pin 3 is ASI-, and the safety signal travels on channel 2, looped through to an M12 socket on the right side of the switch. The AS-Interface slave profile is 0.B.F, and the ID1 code is set to F (hex, variable 0...F). That means the switch presents itself as a standard safety slave on the AS-i bus; no special gateway configuration needed beyond assigning the address. The optional LED indicator runs on 24 V DC, which is handy for a quick visual check that the switch is powered without needing to meter the AS-i line. The switch itself is mechanical — no electronics in the safety path — so the mean time to dangerous failure is driven by the contacts, not a semiconductor junction. Mounting position is any orientation, secured by screw fixing through the 56 mm wide metal block housing. The sensor length is 99.7 mm. Shock resistance is 30 g for 11 ms per IEC 60068-2-27, and vibration resistance is 0.35 mm / 5 g per IEC 60068-2-6. That covers most machine-mounted applications without needing a separate vibration isolator. The surge voltage resistance is 0.8 kV, and insulation voltage is rated at 30 V — keep that in mind if the AS-i line runs near higher-voltage power cables in the same trunk.","metaTitle":"Siemens 3SF1124-1KA00-1BA2 SIRIUS Safety Switch, IP66/IP67,","metaDescription":"Siemens 3SF1124-1KA00-1BA2 SIRIUS mechanical safety switch with positive-opening contacts, ASIsafe interface, IP66/IP67 metal housing, 24 V LED. Current production. Sourced to orde","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":"56 mm","protection class IP":"IP66/IP67","Length Of The Sensor":"99.7 mm","Design Of The Housing":"block, wide","Coating Of The Enclosure":"cathodic dip coating","Material Of The Enclosure":"metal","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","Of The Supplied Basic Switch":"3SF1124-1KA00-1BA2","Substance Prohibitance (Date)":"03/01/2017","Type Of Electrical Connection":"plug M12","Insulation Voltage Rated Value":"30 V","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","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 (Switching Cycles) Typical":"15 000 000","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/3SF1124-1KA00-1BA2/alternatives.json"},"ai":{"faq":[{"question":"What is the IP rating and enclosure material?","answer":"IP66/IP67, metal housing with cathodic dip coating — suitable for washdown and outdoor use."},{"question":"How many safety contacts does it have?","answer":"One safety-related NC contact (positive-opening) plus two auxiliary NC contacts. No NO contacts."},{"question":"What is the AS-Interface connection type?","answer":"M12 plug, 4-pole: Pin 1 = ASI+, Pin 3 = ASI-. Safety channel 2 loops through to an M12 socket on the right side."},{"question":"Where can I buy 3SF1124-1KA00-1BA2?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF1124-1KA00-1BA2","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/3SF1124-1KA00-1BA2 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}}