{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2816-0EW20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2816-0EW20","canonicalUrl":"https://aoctrl.com/siemens/3RA2816-0EW20","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2816-0EW20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2816-0EW20 function module, star-delta circuit, adjustable ON-delay 0.5...60 s, control supply 24...240 V AC/DC, clip-on mounting, 45 x 74 x 38 mm.","salesMarkdown":"## Star-delta timing module for SIRIUS motor starters The Siemens 3RA2816-0EW20 is a SIRIUS function module designed to add a star-delta timing function to a motor starter assembly. It comprises a basic module and two coupling modules, integrating directly into the SIRIUS system without additional wiring. The adjustable time range is 0.5 to 60 seconds, with a recovery time of 150 ms between switching cycles, making it suitable for controlling the star-to-delta transition in motor starting applications. ## Control supply and switching behaviour The supply influence is ±2 %. It provides a delayed switching function with two delayed break contacts, and the initial value is 0.85 with a full-scale value of 1.1. There is no ON-delay or OFF-delay function — the delay is specific to the star-delta transition. ## Mounting and environmental ratings The module clips onto a DIN rail (clip-on fastening method) and can be mounted in any position, matching the contactor orientation. Dimensions are 45 mm width, 74 mm depth, and 38 mm height, with zero clearance required on all sides. The degree of pollution is rated 3, with basic insulation type.","metaTitle":"Siemens 3RA2816-0EW20 SIRIUS Function Module, 24-240 V AC/DC","metaDescription":"Siemens 3RA2816-0EW20 SIRIUS function module for star-delta motor starters. Adjustable time 0.5-60 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","Width":"45 mm","at DC":"24 ... 240 V","title":"3RA2816-0EW20","Height":"38 mm","Upwards":"0 mm","Forwards":"0 mm","ON-delay":"No","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":"function module star-delta (wye-delta), consisting of lateral basic module and two coupling modules, time range 0.05-60 s, 24-240 V AC/DC, 50/60 Hz, varistor for attenuation of the contactor coils integrated, for contactors 3RT2 and auxiliary contactors 3RH2","Non-Volatile":"No","Initial Value":"0.85","Pulse Delayed":"No","Pulse-Shaping":"No","Recovery Time":"150 ms","During Storage":"-40 ... +85 °C","Adjustable Time":"0.5 ... 60 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":"2","Mounting Position":"any (like contactor)","additive ON-delay":"No","ON-delay/OFF-delay":"No","Product Brand Name":"SIRIUS","Star-Delta Circuit":"Yes","Type Of Insulation":"Basic insulation","Degree Of Pollution":"3","Product Designation":"function module","Passing Make Contact":"No","Design Of The Product":"comprising basic module and two coupling modules","Passing Break Contact":"No","Power Supply Influence":"±2 %","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","Material Of Switching Contacts":"AgSnO2","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":"Yes","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":"100 000","with contactor 3R.2 of frame size S2":"100 000","with contactor 3R.2 of frame size S3":"100 000","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":"100 000","Flashing Symmetrically With Pulse Start":"No","Product Component Semi-Conductor Output":"No","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","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","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":"10 000 000","Size Of Contactor Can Be Combined Company-Specific":"S00, S0, S2, S3","electrostatic discharge according to IEC 61000-4-2":"8 kV","At The Relay Outputs Switchover Delayed/Without Delay":"No","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","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","Retrotriggerable With Deactivated Control Signal/Instantaneous Contact":"No","Retrotriggerable With Switched-On Control Signal/Instantaneous Contact":"No","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 4 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$75.10","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f4ef0370fe5ba6d6874502c1cde310c6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=54692&mlfb=3RA2816-0EW20"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2816-0EW20","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/3RA2816-0EW20 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}}