{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3TK2845-2BB41","brand":"Siemens","brandSlug":"siemens","productSlug":"3TK2845-2BB41","canonicalUrl":"https://aoctrl.com/siemens/3TK2845-2BB41","factsUrl":"https://aoctrl.com/api/mcp/products/3TK2845-2BB41","rawCanonicalId":null},"summary":{"shortDescription":"SIRIUS SAFETY RELAY WITH ELECTR. RELEASE CIRCUIT (FK) 24V DC, 45.0MM, SPRING-LOADED TERMINAL, FK INSTANT.: 1S AND 1HL, FK DELAYED:1S AND 1HL 0.05..3S, MK:1HL, AUTOSTART / MONIT. START, MULTIFUNCTION UNIT, MAX. CATEGORY: 4","salesMarkdown":null,"metaTitle":null,"metaDescription":null,"metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Safety Relays"],"specifications":{"Depth":"88 mm","Solid":"2x (24 ... 16)","Width":"45 mm","at DC":"0.85 ... 1.15","Height":"138.5 mm","Maximum":"30 ms","Typical":"25 ms","at 24 V":"1 A","Stranded":"2x (24 ... 16)","at 115 V":"3 A","at 230 V":"3 A","Start input":"Yes","UL approval":"Yes","Mounting type":"screw and snap-on mounting","Safety Switch":"Yes","at DC maximum":"100 ms","During Storage":"-40 ... +80 °C","Feedback Input":"Yes","Automatic start":"Yes","lifecycle_stage":"mature","During Operation":"-25 ... +60 °C","Shock resistance":"8g / 10 ms and 15g / 5 ms","Valve Monitoring":"No","Delayed Switching":"0","Mounting position":"any","acc. to IEC 61508":"3","at DC rated value":"24 V","Monitored Start-Up":"Yes","Product brand name":"SIRIUS","Product designation":"safety relays","Design of the product":"for EMERGENCY-STOP and safety doors","Instantaneous Contact":"1","Standstill monitoring":"No","1-Channel Or 2-Channel":"2","EMERGENCY OFF function":"Yes","Light array monitoring":"Yes","acc. to EN ISO 13849-1":"e","Design of the cascading":"cascading or in-service switching","Safety-Related Circuits":"Yes","EMC emitted interference":"IEC 60947-5-1, IEC 60000-4-3, IEC 60000-4-5, IEC 60000-4-6","Laser Scanner Monitoring":"Yes","Light barrier monitoring":"Yes","With Core End Processing":"2 x (0.25 ... 1.5 mm²)","Rotation Speed Monitoring":"No","Tactile Sensor Monitoring":"Yes","Position Switch Monitoring":"Yes","Protective Door Monitoring":"Yes","Of The Sensor Input Minimum":"45 ms","Operating frequency maximum":"2 000 1/h","Without Core End Processing":"2x (0.25 ... 1.5 mm²)","Air pressure acc. to SN 31205":"90 ... 106 kPa","Type of electrical connection":"spring-loaded terminals","Insulation voltage rated value":"300 V","Monitoring of floating sensors":"Yes","Of The Cascading Input Minimum":"0.045 s","Category acc. to EN ISO 13849-1":"4","EMERGENCY-OFF circuit monitoring":"Yes","Safety-Related Delayed Switching":"1","Pressure-sensitive mat monitoring":"Yes","DC resistance of the cable maximum":"1 000 Ω","Monitoring of non-floating sensors":"Yes","Relative humidity during operation":"10 ... 95 %","of the ON pushbutton input minimum":"0.2 s","Product feature cross-circuit-proof":"Yes","Protection against electrical shock":"finger-safe","Protection class IP of the terminal":"IP20","Cascading Input/Functional Switching":"Yes","Protection class IP of the enclosure":"IP20","Safety-Related Instantaneous Contact":"1","Stop category acc. to DIN EN 60204-1":"0 + 1","Surge voltage resistance rated value":"4 000 V","Reference code acc. to DIN EN 61346-2":"F","for enabling circuit at DC-13 at 24 V":"1 A","Installation environment regarding EMC":"This product is suitable for Class A environments only. It can cause undesired radio-frequency interference in residential environments. If this is the case, the user must take appropriate measures.","Safety device type acc. to IEC 61508-2":"Type B","Magnetically Operated Switch Monitoring":"Yes","for signaling function at DC-13 at 24 V":"0.5 A","Recovery time after power failure typical":"8 000 ms","Suitability for interaction press control":"No","Hardware fault tolerance acc. to IEC 61508":"1","Vibration resistance acc. to IEC 60068-2-6":"5 ... 500 Hz: 0,075 mm","PFHD with high demand rate acc. to EN 62061":"0.0000000069 1/h","For Signaling Function Instantaneous Contact":"0","SIL Claim Limit (subsystem) acc. to EN 62061":"3","Type of electrical connection Plug-in socket":"Yes","Type of voltage of the control supply voltage":"DC","for delayed release circuit acc. to IEC 61508":"SIL3","magnetically operated switch monitoring NC-NC":"Yes","magnetically operated switch monitoring NC-NO":"No","Type of the safety-related wiring of the inputs":"single-channel and two-channel","Mechanical service life (switching cycles) typical":"100 000","for delayed release circuit acc. to EN ISO 13849-1":"e","Installation altitude at height above sea level maximum":"2 000 m","Recovery time after opening of the safety circuits typical":"400 ms","Design of the fuse link for short-circuit protection of the NO contacts of the relay outputs required":"gL/gG: 4 A or fast-acting: 4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3TK2845-2BB41/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3TK2845-2BB41","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/3TK2845-2BB41 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}}