{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF1124-1LA00-1BA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF1124-1LA00-1BA2","canonicalUrl":"https://aoctrl.com/siemens/3SF1124-1LA00-1BA2","factsUrl":"https://aoctrl.com/api/mcp/products/3SF1124-1LA00-1BA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS mechanical safety switch, 3SF1124-1LA00-1BA2, block housing, 24 V LED, IP66/IP67, ASIsafe, positive opening contacts.","salesMarkdown":"The Siemens SIRIUS 3SF1124-1LA00-1BA2 is a mechanical safety switch in a wide metal block housing, designed for positive opening of safety-related contacts — that means the NC contacts are mechanically forced open when the actuator is removed, even if the contacts are welded. This is the core requirement for a safety interlock per IEC 60947-5-1, and it carries one safety-related NC contact plus two auxiliary NC contacts, with no NO contacts on board. The 24 V DC LED indicator gives a quick visual on supply status at the switch body — useful during commissioning or fault-finding on a guarded gate. The switch communicates safety status over ASIsafe via a 4-pin M12 plug (pin 1 = ASI+, pin 3 = ASI-), with channel 2 looped through to an M12 socket on the right side for daisy-chaining. The AS-Interface slave profile is 0.B.F. Rated for IP66/IP67, the metal housing with cathodic dip coating handles washdown environments — think food processing, packaging lines, or outdoor conveyor gates where water and dust are constant. The screw-fixing method and any mounting position simplify panel integration, and the 56 mm width fits standard machine guarding frames. The positive opening function is the deciding spec for safety circuits: it guarantees the NC contacts open mechanically when the guard is opened, regardless of weld or spring failure. That makes this switch suitable for safety-rated interlock applications up to SIL 3 / PL e when used with a compatible safety relay or ASIsafe master. Mechanical service life is rated at 15,000,000 operating cycles typical — that's well into the millions for a high-cycle gate or door interlock. Repeat accuracy of 0.1 mm means the switch position is consistent cycle-to-cycle, important for precise alignment in automated machinery. Surge voltage resistance is 0.8 kV, and insulation voltage is rated at 30 V. Shock resistance per IEC 60068-2-27 is 30g / 11 ms; vibration resistance per IEC 60068-2-6 is 0.35 mm / 5g. These figures confirm the switch holds up on vibrating machinery or near impact zones.","metaTitle":"Siemens 3SF1124-1LA00-1BA2 SIRIUS Safety Switch, 24 V LED, I","metaDescription":"Siemens SIRIUS 3SF1124-1LA00-1BA2 mechanical safety switch with positive opening contacts, 24 V LED, IP66/IP67, ASIsafe. Current lifecycle. Sourced to order against RFQ.","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":"snap-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":"3SF1124-1LA00-1BA2","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 (Operating 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/3SF1124-1LA00-1BA2/alternatives.json"},"ai":{"faq":[{"question":"What is the 24 V LED for on this safety switch?","answer":"The 24 V DC LED indicator provides local visual confirmation that supply voltage is present at the switch body, which helps during commissioning and troubleshooting without needing a multimeter."},{"question":"What does the ID1 code F (hex) mean?","answer":"The ID1 code is set to F (hex, variable 0...F) — this is the AS-Interface slave address or identification code used by the AS-i master to recognize the device on the network."},{"question":"Where can I buy 3SF1124-1LA00-1BA2 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF1124-1LA00-1BA2","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/3SF1124-1LA00-1BA2 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}}