{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF1214-1LC05-1BA1","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF1214-1LC05-1BA1","canonicalUrl":"https://aoctrl.com/siemens/3SF1214-1LC05-1BA1","factsUrl":"https://aoctrl.com/api/mcp/products/3SF1214-1LC05-1BA1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS mechanical safety switch, 3SF1214-1LC05-1BA1, AS-Interface slave, 24 V LED, IP66/IP67, positive opening, 2 NC safety contacts.","salesMarkdown":"The Siemens 3SF1214-1LC05-1BA1 is a SIRIUS mechanical safety switch with an integrated AS-Interface slave interface, built for guarding applications where you need both a hardwired safety circuit and a fieldbus signal back to the controller. The 24 V on the LED tells you the indicator is powered from the same AS-Interface bus voltage — no separate supply needed for the status lamp. The positive opening action is the critical safety feature: the NC contacts are mechanically forced open by the actuator, so even if the contacts weld, the safety circuit breaks. That's what makes it suitable for safety-related switching per IEC 60947-5-1. The two safety-rated NC contacts give you a dual-channel structure — one channel to the safety relay or PLC, the other for feedback monitoring, which is standard practice for PL d / SIL 3 architectures. The IP66/IP67 enclosure with a metal housing and cathodic dip coating means this switch survives washdown environments and outdoor installation — think food processing lines, conveyor transfer stations, or packaging machines where high-pressure cleaning is routine. The M12 plug, 4-pole with the AS-Interface pinout (Pin 1 = ASI+, Pin 3 = ASI-) keeps wiring consistent with standard AS-i flat cable drops. No separate power cable for the sensor; it draws power and communicates over the same yellow cable. Screw fixing, mounting position any, block-style narrow housing at 31 mm wide — fits standard 32 mm grid or 35 mm profile. The 89.7 mm length is compact enough for guard-door hinges or sliding gate edges. The repeat accuracy of 0.1 mm means the switch position is consistent cycle to cycle, which matters when the actuator is mounted to a moving guard and you need to avoid false trips from thermal expansion or wear. The mechanical service life of 15,000,000 operating cycles is typical for a snap-action mechanism — it'll outlast most machine rebuild intervals.","metaTitle":"Siemens 3SF1214-1LC05-1BA1 SIRIUS Safety Switch, AS-Interfac","metaDescription":"Siemens 3SF1214-1LC05-1BA1 SIRIUS mechanical safety switch with AS-Interface, 24 V LED, IP66/IP67, positive opening contacts. Current lifecycle stage. Sourced 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":"snap-action contacts","Mounting Position":"any","Product Brand Name":"SIRIUS","Degree Of Pollution":"class 3","Product Designation":"Mechanical safety switches","Width Of The Sensor":"31 mm","protection class IP":"IP66/IP67","Length Of The Sensor":"89.7 mm","Design Of The Housing":"block, narrow","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":"3SF1214-1LC05-1BA1","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":"Other, without, ASi_basic switch with plug","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":"Yes","Number Of Switching Contacts Safety-Related":"2","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","Minimum Actuating Force In Directions Of Actuation":"20 N","Design Of The Interface For Safety-Related Communication":"ASIsafe via M12 plug","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/3SF1214-1LC05-1BA1/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3SF1214-1LC05-1BA1 and get a price?","answer":"This part is sourced 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."},{"question":"What is the AS-Interface pinout on the M12 connector?","answer":"The M12 plug, 4-pole is wired: Pin 1 = ASI+, Pin 2 = not assigned, Pin 3 = ASI-, Pin 4 = not assigned. Standard AS-i flat cable connects directly; no separate power supply needed for the switch electronics."},{"question":"Does 3SF1214-1LC05-1BA1 have positive opening safety contacts?","answer":"Yes, the switching function is positive opening. The NC contacts are mechanically forced open by the actuator, so the safety circuit breaks even if contacts weld — required for safety applications per IEC 60947-5-1."},{"question":"What is the IP rating and enclosure material?","answer":"IP66/IP67, metal housing with cathodic dip coating. Suitable for washdown and outdoor environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF1214-1LC05-1BA1","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/3SF1214-1LC05-1BA1 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}}