{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SK2941-2AA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3SK2941-2AA10","canonicalUrl":"https://aoctrl.com/siemens/3SK2941-2AA10","factsUrl":"https://aoctrl.com/api/mcp/products/3SK2941-2AA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS safety relay, basic starter kit, 3SK2941-2AA10, 24 VDC, 2-channel, IP20, snap-on DIN rail mount.","salesMarkdown":"The Siemens 3SK2941-2AA10 is a SIRIUS safety relay packaged as a basic starter kit — it includes the 3SK2112-2AA10 basic unit, SIRIUS Safety ES Standard configuration software, and a 3UF7941-0AA00-0 USB PC cable, so you can commission the safety logic without hunting for separate programming tools. Rated for 24 VDC control voltage, it is a 2-channel safety relay with monitored start-up and valve monitoring capability — meaning it can supervise both the safety circuit and the downstream pneumatic valve state in a single device, which saves a module slot in the panel. The enclosure is IP20, so it belongs inside a control cabinet, not on the machine frame. Width is 22.5 mm, depth 124.5 mm, height 100 mm — a single 22.5 mm module pitch on the DIN rail, so it fits in a tight row alongside contactors or terminal blocks without crowding the wiring duct. Input delay is adjustable from 0 to 150 ms — set it short for fast-reacting light curtains or longer to debounce a mechanical guard door switch and avoid nuisance trips. Total current draw is 6.5 A maximum — that is the sum of the relay coil and any load it switches through the safety outputs. Budget that into your 24 VDC supply sizing. PROFIBUS DP and PROFINET IO are supported when the appropriate interface module is added, with 64-bit cyclic data — so this base unit can become a networked safety node without replacing the core relay. Shock resistance is 15g / 11 ms, so it survives the vibration and impact of a machine cycle or a forklift bump to the panel door.","metaTitle":"Siemens 3SK2941-2AA10 SIRIUS Safety Relay, 24 VDC, Basic Sta","metaDescription":"Siemens 3SK2941-2AA10 SIRIUS safety relay basic starter kit. 24 VDC, 2-channel, IP20, snap-on DIN rail. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Safety Relays"],"specifications":{"Depth":"124.5 mm","Solid":"20 ... 16","Width":"22.5 mm","Height":"100 mm","Maximum":"0.1 mA","at 24 V":"1 ms","Stranded":"20 ... 16","2-Channel":"0","During Storage":"-40 ... +80 °C","Safety-Related":"10","Single Channel":"0","Of The Terminal":"IP20","Type Of Voltage":"DC","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","Fastening Method":"Snap-mounted to DIN rail or screw-mounted with additional push-in lug","Input Delay Time":"0 ... 150 ms","Of The Enclosure":"IP20","Product Category":"Safety relay","Shielded Maximum":"1 000 m","Shock Resistance":"15g / 11 ms","Valve Monitoring":"Yes","Light Test Period":"3 ms","Mounting Position":"any","at DC rated value":"24 V","Monitored Start-Up":"Yes","Non-Safety-Related":"1","Product Brand Name":"SIRIUS","Unshielded Maximum":"600 m","Degree Of Pollution":"3","Product Designation":"Basic starter kit","protection class IP":"IP20","PROFIBUS DP protocol":"Yes; when using the DP interface module; 64 bit cyclical data","PROFINET IO protocol":"Yes; when using the PN interface module; 64-bit cyclic data","for AWG cables solid":"1x (20 ... 16), 2x (20 ... 16)","for signal <1> at DC":"15 ... 30","Design Of The Product":"comprises 3SK2112-2AA10 basic unit, SIRIUS Safety ES Standard and 3UF7941-0AA00-0 USB PC cable","Readback Time Maximum":"400 ms","Total Current Maximum":"6.5 A","with signal <0> at DC":"-3 ... +5 V","For Signal <1> Typical":"2.6 mA","Parameterizable Inputs":"Yes","according to IEC 61508":"3","according to IEC 62061":"3","EMERGENCY STOP function":"Yes","Parameterizable Outputs":"Yes","Safety-Related Circuits":"Yes","for AWG cables stranded":"1x (20 ... 16), 2x (20 ... 16)","Safety-Related 2-Channel":"2","Muting, 2 Sensor-Parallel":"Yes","Muting, 4 Sensor-Parallel":"Yes","Monitoring Parameterizable":"Yes","Position Switch Monitoring":"Yes","Protective Door Monitoring":"Yes","Evaluation: Enabling Switch":"Yes","Evaluation: Selector Switch":"Yes","Muting, 4 Sensor-Sequential":"Yes","Operating Frequency Maximum":"2 000 1/h","Operating Power Rated Value":"2.5 W","Proximity Switch Monitoring":"Yes","Substance Prohibitance (Date)":"07/01/2006","Type Of Electrical Connection":"spring-loaded terminal (push-in)","Insulation Voltage Rated Value":"50 V","Monitoring Of Floating Sensors":"Yes","Configuration Software Required":"Yes; Safety ES V1.0 and higher","EMERGENCY-OFF circuit monitoring":"Yes","Dark Period Of The Common Drivers":"3 ms","For Testing Contact-Based Sensors":"2","Number Of Function Blocks Typical":"50","Pressure-Sensitive Mat Monitoring":"Yes","Recovery Time Of The Safe Outputs":"0 ms","Control Supply Voltage Rated Value":"24 V","Monitoring Of Non-Floating Sensors":"Yes","Relative Humidity During Operation":"10 ... 95 %","air pressure according to SN 31205":"90 ... 106 kPa","Evaluation: Two-Hand Operator Panel":"Yes","Product Function Removable Terminal":"Yes","Surge Voltage Resistance Rated Value":"800 V","category according to EN ISO 13849-1":"4","two-hand control according to EN 574":"Yes","stop category according to EN 60204-1":"0 / 1","Magnetically Operated Switch Monitoring":"Yes","Protective Door Monitoring With Tumbler":"Yes","due to burst according to IEC 61000-4-4":"2 kV (power ports) / 1 kV (signal ports)","reference code according to IEC 81346-2":"F","Finely Stranded With Core End Processing":"1x (0.5 ... 1.0 mm²), 2x (0.5 ... 1.0 mm²)","At Digital Output With Signal <0> Maximum":"0.1 mA","Input Delay Time At Digital Input Maximum":"150 ms","Touch Protection Against Electrical Shock":"finger-safe","product function suitable for AS-i Power24V":"No","protocol is supported AS-Interface protocol":"No","Opto-Electronic Protection Device Monitoring":"Yes","product function diagnostics with CTT2 slave":"No","At The Digital Outputs Short-Circuit Protection":"Yes","hardware fault tolerance according to IEC 61508":"1","performance level (PL) according to ISO 13849-1":"e","type of digital inputs according to IEC 60947-1":"Type 1","vibration resistance according to IEC 60068-2-6":"5 ... 500 Hz: 0.75 mm","Ingress Aquisition Time At Digital Input Maximum":"60 ms","PFHD with high demand rate according to EN 62061":"1E-8 1/h","EMC emitted interference according to IEC 60947-1":"class A","SIL Claim Limit (subsystem) according to EN 62061":"3","Evaluation: Electro-Sensitive Protective Equipment":"Yes","PFDavg with low demand rate according to IEC 61508":"1.5E-5","electrostatic discharge according to IEC 61000-4-2":"4 kV contact discharge / 8 kV air discharge","Installation Altitude At Height Above Sea Level Maximum":"4 000 m; Derating, see Product Notification 109792701","protocol is supported ASIsafe (Safety at work) protocol":"No","Design Of The Contactless Switching Element Safety-Related":"P potential","Diagnostics Test Interval By Internal Test Function Maximum":"1 000 s","switching capacity current of semiconductor outputs at DC-13 at 24 V":"4 A","Connectable Conductor Cross-Section Finely Stranded With Core End Processing":"0.5 ... 1 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SK2941-2AA10/alternatives.json"},"ai":{"faq":[{"question":"What is the 3SK2941-2AA10 used for?","answer":"It is a safety relay basic starter kit for monitoring emergency stops, light curtains, and guard door switches in industrial machinery. It includes the base unit, configuration software, and USB cable."},{"question":"Does the 3SK2941-2AA10 support PROFINET or PROFIBUS?","answer":"Yes, both PROFINET IO and PROFIBUS DP are supported when the respective interface module is added, with 64-bit cyclic data."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SK2941-2AA10","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/3SK2941-2AA10 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}}