{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF1324-1SF21-1BA4","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF1324-1SF21-1BA4","canonicalUrl":"https://aoctrl.com/siemens/3SF1324-1SF21-1BA4","factsUrl":"https://aoctrl.com/api/mcp/products/3SF1324-1SF21-1BA4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS mechanical safety switch, 3SF1324-1SF21-1BA4, spring-actuated lock (closed-circuit principle), 1300 N locking force, IP65/IP67, M12 plug with ASIsafe.","salesMarkdown":"The Siemens SIRIUS 3SF1324-1SF21-1BA4 is a mechanical safety switch with a separate actuator and tumbler, designed for guard door monitoring in safety circuits. Its spring-actuated lock operates on the closed-circuit principle, meaning the lock engages when power is removed — fail-safe for a guarded zone. The 1300 N locking force holds the guard closed against forced entry, meeting the 1000 N minimum per EN ISO 14119 for personnel protection. IP65/IP67 means the housing withstands hose-down and temporary immersion — suitable for washdown zones in food processing or outdoor conveyor gantries. The M12 fixed plug carries ASIsafe on pins 1 and 3, with the magnet coil supplied at 24 V. Channel 1 monitors the actuator (2 NC contacts); channel 2 monitors the magnet (1 NC). Both channels follow a 2v2 evaluation principle, which means the safety PLC sees two independent signal paths per guard — no single fault goes undetected. ## Mechanical endurance and environmental range Rated for 1 000 000 switching cycles typical, with repeat accuracy of 0.1 mm — consistent detection over the life of the machine. Shock resistance at 30g / 11 ms and vibration resistance at 0.35 mm / 5g per IEC 60068-2-27 and IEC 60068-2-6, respectively. ## Mounting and actuation Screw fixing, any mounting position. The actuator accepts approach from 5 directions, with a minimum actuating force of 30 N. The housing is plastic with a special design; the switch head is also plastic. Positive opening of the NC contacts is confirmed — a mechanical guarantee that the contacts break even if welded, required for safety functions per IEC 60947-5-1. The matching separate actuator (3SE5000-0AV0) must be ordered separately.","metaTitle":"Siemens 3SF1324-1SF21-1BA4 SIRIUS Safety Switch, 1300 N Lock","metaDescription":"Siemens SIRIUS 3SF1324-1SF21-1BA4 mechanical safety switch with 1300 N locking force, IP65/IP67, M12 ASIsafe. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Safety Interlock Switches"],"specifications":{"ID1 code":"F (default); 0...F","Locking Force":"1 300 N","During Storage":"-40 ... +80 °C","Repeat Accuracy":"0.1 mm","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing","Shock Resistance":"30g / 11 ms","Mounting Position":"any","Product Brand Name":"SIRIUS","Degree Of Pollution":"class 3","Product Designation":"Mechanical safety switches","protection class IP":"IP65/IP67","Vibration Resistance":"0.35 mm / 5g","Design Of The Housing":"special design","Design Of The Product":"with separate actuator and with tumbler","Design Of The Interface":"M12 plug, fixed","Locking Mechanism Design":"spring-actuated lock (closed-circuit principle) escape release from the front","Material Of The Enclosure":"plastic","according to EN ISO 14119":"1 000 N","AS-Interface slave profile":"7.B.F","according to IEC 60068-2-6":"0.35 mm/5g","according to IEC 60068-2-27":"30g / 11 ms","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","Supply Voltage Of Magnet Coil":"24 V","Type Of Electrical Connection":"M12 plug, fixed","Insulation Voltage Rated Value":"30 V","Design Of The Actuating Element":"5 directions of approach","Design Of The Switching Function":"positive opening","Number Of Directions Of Actuation":"5","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","Material Of The Enclosure Of The Switch Head":"plastic","Mechanical Service Life (Switching Cycles) Typical":"1 000 000","Minimum Actuating Force In Directions Of Actuation":"30 N"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SF1324-1SF21-1BA4/alternatives.json"},"ai":{"faq":[{"question":"What is the locking force of 3SF1324-1SF21-1BA4?","answer":"The locking force is 1300 N, which exceeds the 1000 N minimum per EN ISO 14119 for personnel protection applications."},{"question":"What IP rating does the 3SF1324-1SF21-1BA4 carry?","answer":"IP65/IP67, meaning it is protected against hose-directed water and temporary immersion — suitable for washdown environments."},{"question":"Where can I buy the 3SF1324-1SF21-1BA4?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at the time of quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF1324-1SF21-1BA4","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/3SF1324-1SF21-1BA4 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}}