{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2811-2CW10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2811-2CW10","canonicalUrl":"https://aoctrl.com/siemens/3RA2811-2CW10","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2811-2CW10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2811-2CW10 function module, ON-delay timer, adjustable time 0.05-100 s, AC/DC 24-240 V, 45 mm width, clip-on mounting.","salesMarkdown":"## Timer function for motor starter sequencing This Siemens 3RA2811-2CW10 is a SIRIUS function module that provides an ON-delay timer function — it delays the output contact closure after the control voltage is applied, adjustable from 0.05 to 100 seconds. It operates on AC or DC control voltage from 24 to 240 V, covering both 50 and 60 Hz supplies without needing a separate power supply module. The 50 ms recovery time means the timer is ready for another cycle within that window after the input signal drops — relevant for rapid-start applications like pump sequencing. ## Panel fit and mounting constraints Dimensions are 45 mm wide by 38 mm tall by 74 mm deep — the 74 mm depth is the key clearance dimension when the enclosure door or backplane has a limited gutter depth. Mounting position is unrestricted — the module can be oriented any way (like a contactor), which helps when routing wires in a crowded panel.","metaTitle":"Siemens 3RA2811-2CW10 SIRIUS ON-Delay Timer, 0.05-100s, 45mm","metaDescription":"Siemens 3RA2811-2CW10 SIRIUS function module, ON-delay timer, 0.05-100s adjustable, AC/DC 24-240V, 45mm wide, clip-on mounting. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"74 mm","Solid":"20 ... 14","Width":"45 mm","at DC":"24 ... 240 V","title":"3RA2811-2CW10","Height":"38 mm","Upwards":"0 mm","Forwards":"0 mm","ON-delay":"Yes","Stranded":"20 ... 14","at 50 Hz":"24 ... 240 V","at 60 Hz":"24 ... 240 V","Backwards":"0 mm","Downwards":"0 mm","OFF delay":"No","At The Side":"0 mm","description":"electronic timing relay, ON-delay, with semiconductor output, time range 0.05-100 s, 24-240 V AC/DC, 50/60 Hz, varistor for attenuation of the contactor coils integrated, spring-loaded terminal, can be snapped on at the front on contactors 3RT2.1 / 3RT2.2 and auxiliary contactors 3RH2","Non-Volatile":"No","Initial Value":"0.85","Pulse Delayed":"No","Pulse-Shaping":"No","Recovery Time":"50 ms","During Storage":"-40 ... +85 °C","Adjustable Time":"0.05 ... 100 s","Type Of Voltage":"AC/DC","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +85 °C","Fastening Method":"clip-on","Full-Scale Value":"1.1","Delayed Switching":"1","Mounting Position":"any (like contactor)","additive ON-delay":"No","ON-delay/OFF-delay":"No","Product Brand Name":"SIRIUS","Star-Delta Circuit":"No","Type Of Insulation":"Basic insulation","Degree Of Pollution":"3","Product Designation":"function module","at AWG cables solid":"2x (20 ... 14)","Passing Make Contact":"No","Passing Break Contact":"No","Power Supply Influence":"±1 %","at AWG cables stranded":"2x (20 ... 14)","OFF delay/instantaneous":"No","Relative Repeat Accuracy":"1 %","consumed current at 24 V":"24 mA","Pulse Delayed/Instantaneous":"No","Pulse-Shaping/Instantaneous":"No","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"with varistor","ON-delay/instantaneous contact":"No","Test Voltage For Isolation Test":"1.5 kV","additive ON-delay/instantaneous":"No","ON-delay/OFF-delay/instantaneous":"No","Variably Clocked With Pulse Start":"No","Control Supply Voltage Frequency 1":"50 ... 60 Hz","Relative Humidity During Operation":"0 ... 95 %","Star-Delta Circuit With Delay Time":"No","Passing Break Contact/Instantaneous":"No","Product Function Star-Delta Circuit":"No","Test Voltage For Surge Voltage Test":"4 800 V","protection class IP of the terminal":"IP20","Surge Voltage Resistance Rated Value":"4 kV","Variably Clocked With Interval Start":"No","with contactor 3R.2 of frame size S0":"10 000 000","Constant Clock Cycle With Pulse Start":"No","EMC immunity according to IEC 61812-1":"Environment A (industrial area)","with contactor 3R.2 of frame size S00":"10 000 000","Flashing Symmetrically With Pulse Start":"No","Product Component Semi-Conductor Output":"Yes","due to burst according to IEC 61000-4-4":"2 kV network connection / 1 kV control connection","reference code according to IEC 81346-2":"K","Constant Clock Cycle With Interval Start":"No","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²","Flashing Asymmetrically With Pulse Start":"No","Influence Of The Surrounding Temperature":"±1 %","Product Extension Optional Remote Control":"No","Product Extension Required Remote Control":"No","Flashing Symmetrically With Interval Start":"No","Passing Make Contact/Instantaneous Contact":"No","Design Of The Control Terminal Non-Floating":"No","Finely Stranded Without Core End Processing":"0.25 ... 1.5 mm²","Flashing Asymmetrically With Interval Start":"No","shock resistance according to IEC 60068-2-27":"15g / 11 ms","Retriggerable With Deactivated Control Signal":"No","Type Of Voltage Of The Control Supply Voltage":"AC/DC","operating frequency with 3RT2 contactor maximum":"2 500 1/h","vibration resistance according to IEC 60068-2-6":"10 ... 59 Hz: 0.35 mm, 60 ... 150 Hz: 2g","Retrotriggerable With Switched-On Control Signal":"No","Mechanical Service Life (Operating Cycles) Typical":"100 000 000","Size Of Contactor Can Be Combined Company-Specific":"S00, S0","electrostatic discharge according to IEC 61000-4-2":"8 kV","Flashing Symmetrically With Pulse Start/Instantaneous":"No","Relative Setting Accuracy Relating To Full-Scale Value":"15 %","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Flashing Symmetrically With Interval Start/Instantaneous":"No","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded terminals","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes","Retrotriggerable With Deactivated Control Signal/Instantaneous Contact":"No","Retrotriggerable With Switched-On Control Signal/Instantaneous Contact":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/66870344153935e30fe90eedb96fd7b6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=66641&mlfb=3RA2811-2CW10"},"ai":{"faq":[{"question":"What is the adjustable time range on this timer module?","answer":"The ON-delay is adjustable from 0.05 to 100 seconds, set via a potentiometer on the front face."},{"question":"Does this module work with both AC and DC control voltages?","answer":"Yes, it accepts AC or DC from 24 to 240 V, including 50 and 60 Hz AC supplies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2811-2CW10","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/3RA2811-2CW10 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}