{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2812-1DW10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2812-1DW10","canonicalUrl":"https://aoctrl.com/siemens/3RA2812-1DW10","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2812-1DW10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2812-1DW10 function module, OFF-delay timer, adjustable 0.05-100 s, control supply 24-240 V AC/DC, clip-on mounting, 45 x 38 x 74 mm.","salesMarkdown":"## OFF-delay timer for SIRIUS contactor assemblies The Siemens 3RA2812-1DW10 is a SIRIUS function module that adds an adjustable OFF-delay to a contactor or motor starter assembly. It clips directly onto the contactor, so no extra DIN-rail space or wiring is needed for the timing function. The delay is adjustable from 0.05 to 100 seconds, and the control supply accepts 24-240 V AC/DC — one part covers both 24 V and 230 V control circuits across 50/60 Hz. ## What the OFF-delay means in a panel An OFF-delay (also called delay-on-break) keeps the contactor closed for a set time after the control signal is removed. This is useful for sequenced shutdowns — a fan running after the chiller stops, or a conveyor holding position until downstream gates clear. The module mounts in any position (like the contactor it clips to) and operates from -25 to +60 °C, so it works inside a warm panel without derating. Recovery time is 50 ms — the module resets fast enough for repeated start/stop cycles in a packaging or material-handling line.","metaTitle":"Siemens 3RA2812-1DW10 SIRIUS Function Module","metaDescription":"Siemens 3RA2812-1DW10 SIRIUS function module with adjustable OFF-delay (0.05-100 s), 24-240 V AC/DC control supply, clip-on mounting.","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":"3RA2812-1DW10","Height":"38 mm","Upwards":"0 mm","Forwards":"0 mm","ON-delay":"No","Stranded":"20 ... 14","at 50 Hz":"24 ... 240 V","at 60 Hz":"24 ... 240 V","Backwards":"0 mm","Downwards":"0 mm","OFF delay":"Yes","At The Side":"0 mm","description":"electronic timing relay, off delayed, with control signal and semiconductor output, time range 0.05-100 s, 24-240 V AC/DC, 50/60 Hz, varistor for attenuation of the contactor coils integrated, screw 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","minimum ON period":"35 ms","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","Passing Make Contact":"No","for AWG cables solid":"2x (20 ... 14)","Passing Break Contact":"No","Power Supply Influence":"±1 %","OFF delay/instantaneous":"No","for AWG cables stranded":"2x (20 ... 14)","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":"Yes","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":"screw-type 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":"$129.49 – $372.85","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/07f46395e9c79f611faba78b142ef46d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=86160&mlfb=3RA2812-1DW10"},"ai":{"faq":[{"question":"What is the adjustable time range on 3RA2812-1DW10?","answer":"The OFF-delay is adjustable from 0.05 to 100 seconds, covering short timed stops up to extended post-run delays."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2812-1DW10","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/3RA2812-1DW10 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}}