{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF1324-1SF21-1BK4","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF1324-1SF21-1BK4","canonicalUrl":"https://aoctrl.com/siemens/3SF1324-1SF21-1BK4","factsUrl":"https://aoctrl.com/api/mcp/products/3SF1324-1SF21-1BK4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS mechanical safety switch, 3SF1324-1SF21-1BK4, tumbler locking force 1300 N, 5 approach directions, IP65/IP67/IP69, M12 plug, ASIsafe.","salesMarkdown":"## Safety switch with tumbler locking — 1300 N holding force The Siemens SIRIUS 3SF1324-1SF21-1BK4 is a mechanical safety position switch with a tumbler locking mechanism rated at 1 300 N locking force, designed for guard-door monitoring on machinery where a positive-opening contact is required per EN ISO 14119. The 1 300 N holding force means the switch resists forced entry up to that level — critical for applications where an operator could lean against or push a guard door during a cycle. The switch accepts actuation from five directions of approach, simplifying alignment on hinged or sliding guards. ## IP69-rated enclosure — washdown-ready Rated IP65, IP67, and IP69, the plastic enclosure withstands high-pressure, high-temperature washdown common in food-and-beverage or pharmaceutical lines. The fixed M12 plug (4-pole, ASI+ on pin 1, ASI- on pin 3) keeps the connection sealed and eliminates field wiring errors. ## ASIsafe integrated — two-channel evaluation The switch integrates ASIsafe communication with slave profile 7.B.F. Channel 1 monitors the actuator (2 NC contacts per 2v2 evaluation principle); channel 2 monitors the magnet (1 NC). This dual-channel architecture meets SIL 3 / PL e requirements when wired to a compatible safety monitor. The magnet coil runs on 24 V AC/DC. Repeat accuracy is 0.1 mm, and mechanical service life is typically 1 000 000 operating cycles. ## Current production — sourced to order Lifecycle stage is current. The separate actuator (3SE5000-0AV0) must be ordered separately. For BOM-fit confirmation, the key ratings are the 1 300 N locking force, IP69 ingress protection, and the ASIsafe profile — verify these match your safety circuit design.","metaTitle":"Siemens 3SF1324-1SF21-1BK4 SIRIUS Safety Switch, 1300 N Lock","metaDescription":"Siemens SIRIUS safety position switch with tumbler locking force 1300 N, IP69, M12 plug, ASIsafe. Current production. Quoted to order. Request 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, IP69","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","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 (Operating 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/3SF1324-1SF21-1BK4/alternatives.json"},"ai":{"faq":[{"question":"What is the locking force of 3SF1324-1SF21-1BK4?","answer":"The locking force is 1 300 N, which means the tumbler holds the guard door closed against up to that force."},{"question":"What IP rating does this safety switch have?","answer":"IP65, IP67, and IP69 — suitable for washdown environments including food processing lines."},{"question":"How do I get pricing and availability for 3SF1324-1SF21-1BK4?","answer":"Submit an RFQ through this listing. The part is sourced to order via independent distribution; current pricing and lead time are confirmed at quote time."},{"question":"What actuator is required with this switch?","answer":"The separate actuator 3SE5000-0AV0 must be ordered separately — it is not included."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF1324-1SF21-1BK4","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/3SF1324-1SF21-1BK4 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}}