{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SK2942-2AA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3SK2942-2AA10","canonicalUrl":"https://aoctrl.com/siemens/3SK2942-2AA10","factsUrl":"https://aoctrl.com/api/mcp/products/3SK2942-2AA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS Safety Relay PROFINET starter kit, 3SK2942-2AA10, 45 mm width, IP20, snap-on DIN rail mount, includes 3SK2112-2AA10 basic unit and 3SK2511-2FA10 interface module.","salesMarkdown":"## What this kit is The Siemens 3SK2942-2AA10 is a SIRIUS safety relay starter kit designed for PROFINET-based safety applications. It bundles the 3SK2112-2AA10 basic unit with the 3SK2511-2FA10 PROFINET interface module, plus SIRIUS Safety ES Premium software and the required cables (cite:). The kit handles 2-channel safety inputs and 2 non-safety-related auxiliary contacts, with valve monitoring and monitored start-up built in (cite:,). Snaps onto standard DIN rail or screws in place with an additional push-in lug (cite:). At 45 mm wide and 100 mm tall, it takes up one standard module slot on the rail (cite:,). Depth is 124.5 mm — check clearance behind the backplate before wiring (cite:). Mounting position is any orientation (cite:). Terminals accept 20 to 16 AWG solid or stranded wire, 1x or 2x conductors per clamp (cite:,). The enclosure is IP20 — keep it inside a rated cabinet (cite:,). ## Electrical and timing specs Runs on 24 V DC nominal, with the input signal range 15 to 30 V DC (cite:,). Input delay is adjustable 0 to 150 ms; readback time maxes at 400 ms (cite:,). The light test period runs 3 ms (cite:). Total current draw from the supply is up to 7 A (cite:). ## Fieldbus and environment PROFINET IO and PROFIBUS DP protocols are supported when the respective interface module is fitted, with 64-bit cyclic data (cite:,). Unshielded sensor cable runs up to 600 m; shielded runs reach 1000 m (cite:,). Shock rated at 15g for 11 ms (cite:).","metaTitle":"Siemens 3SK2942-2AA10 SIRIUS Safety Relay Starter Kit, 45mm","metaDescription":"Siemens 3SK2942-2AA10 SIRIUS safety relay starter kit. 45mm wide, snap-on DIN rail mount. Includes PROFINET interface. Current production. Sourced 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":"45 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":"20","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":"2","Product Brand Name":"SIRIUS","Unshielded Maximum":"600 m","Degree Of Pollution":"3","Product Designation":"PROFINET 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":"contains 3SK2112-2AA10 basic unit, PROFINET 3SK2511-2FA10 interface module, SIRIUS Safety ES Premium and required cables","Readback Time Maximum":"400 ms","Total Current Maximum":"7 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":"4","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":"4.5 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":"4","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":"1.2E-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":"1.8E-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/3SK2942-2AA10/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3SK2942-2AA10 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What is the width and depth of 3SK2942-2AA10?","answer":"Width is 45 mm, depth is 124.5 mm, height is 100 mm (cite:,). It occupies one standard DIN-rail module slot."},{"question":"What wire sizes does 3SK2942-2AA10 accept?","answer":"Terminals accept 20 to 16 AWG solid or stranded wire, 1x or 2x conductors per clamp (cite:,)."},{"question":"Does 3SK2942-2AA10 support PROFINET?","answer":"Yes, it supports PROFINET IO with 64-bit cyclic data when the included 3SK2511-2FA10 interface module is used (cite:). PROFIBUS DP is also supported with the appropriate interface module (cite:)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SK2942-2AA10","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/3SK2942-2AA10 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}}