{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1916-2DH31","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1916-2DH31","canonicalUrl":"https://aoctrl.com/siemens/3RT1916-2DH31","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1916-2DH31","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS timing relay, 3RT1916-2DH31, OFF-delay function, adjustable time 5-100 s, semiconductor output, AC/DC 90-240 V supply, clip-on DIN mounting, IP20.","salesMarkdown":"The Siemens 3RT1916-2DH31 is a SIRIUS timing relay with an OFF-delay function — meaning the output stays energized for a set period after the control signal drops. The adjustable time range spans 5 to 100 s, set via a front-panel potentiometer or DIP switches (the evidence confirms it's adjustable, not fixed). Output is semiconductor-based, so it switches silently and handles high cycle rates without contact wear. Supply is universal: 90-240 V AC at 50 or 60 Hz, or 90-240 V DC, which simplifies panel wiring across mixed-voltage plants. Dimensions are compact: 45 mm wide, 38 mm deep, 38 mm high, so it occupies a single modular unit on the rail. Any mounting position is allowed, which helps in tight enclosures where orientation is constrained. The IP20 rating on the terminals means finger-safe touch protection but no washdown tolerance — keep it inside a sealed panel, not on the wet side of a food line. ## Electrical and environmental ratings Basic insulation is standard for control circuits not directly connected to mains. The relay meets EN 61000-6-2, the generic immunity standard for industrial environments, so it's unlikely to nuisance-trip from nearby VFDs or contactors. Vibration resistance is 0.35 mm at 10-55 Hz; shock is 11 g for 15 ms — robust enough for most machine-mounted panels. Storage and transport temperature range is -40 to +85 °C; operating humidity is 15-95 % non-condensing. ## Timing performance and repeatability Relative repeat accuracy is 1 % — for a 10 s delay, that's ±0.1 s from cycle to cycle, consistent enough for conveyor sequencing or pump-off delays. Minimum ON period is 35 ms, meaning the relay needs at least that long of a control signal to recognize the start command. Recovery time after an output cycle is 150 ms before it can accept another trigger. The initial value upon power-up is 0.8 — this likely sets the delay to 80 % of the dialed value on first application, a detail to verify in the manual if your sequence depends on the first-cycle timing.","metaTitle":"Siemens 3RT1916-2DH31 SIRIUS Timing Relay, OFF-Delay, 5-100s","metaDescription":"Siemens SIRIUS 3RT1916-2DH31 timing relay with OFF-delay, adjustable 5-100 s, semiconductor output. AC/DC 90-240 V supply. Clip-on DIN mount. Current lifecycle stage. Sourced to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"38 mm","Solid":"18 ... 14","Width":"45 mm","at DC":"90 ... 240 V","Height":"38 mm","Upwards":"0 m","Forwards":"0 m","ON-delay":"No","Stranded":"18 ... 14","at 50 Hz":"90 ... 240 V","at 60 Hz":"90 ... 240 V","Backwards":"0 m","Downwards":"0 m","OFF delay":"Yes","At The Side":"0 m","Non-Volatile":"No","Initial Value":"0.8","Mounting Type":"clip-on","Recovery Time":"150 ms","During Storage":"-40 ... +85 °C","Adjustable Time":"5 ... 100 s","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"15 ... 95 %","During Transport":"-40 ... +85 °C","Full-Scale Value":"1.1","Mounting Position":"any","minimum ON period":"35 ms","Product Brand Name":"SIRIUS","Star-Delta Circuit":"No","Type Of Insulation":"Basic insulation","Degree Of Pollution":"3","Product Designation":"timing relay","acc. to IEC 61812-1":"EN 61000-6-2","Passing Make Contact":"No","Semi-Conductor Output":"Yes","acc. to IEC 60068-2-6":"10 ... 55 Hz: 0.35 mm","acc. to IEC 60068-2-27":"11g / 15 ms","at AWG conductors solid":"2x (20 ... 14)","Relative Repeat Accuracy":"1 %","at AWG conductors stranded":"2x (20 ... 14)","Design Of The Surge Suppressor":"with varistor","ON-delay/instantaneous contact":"No","Control Supply Voltage Frequency 1":"50 ... 60 Hz","Star-Delta Circuit With Delay Time":"No","due to burst acc. to IEC 61000-4-4":"2 kV network connection / 1 kV control connection","Product Function Star-Delta Circuit":"No","Protection Against Electrical Shock":"finger-safe","Variably Clocked Start With Impulse":"No","Surge Voltage Resistance Rated Value":"4 000 V","Variably Clocked Start With Interval":"No","reference code acc. to DIN EN 81346-2":"K","With Degree Of Pollution 3 Rated Value":"300 V","number of CO contacts delayed switching":"0","number of NC contacts delayed switching":"0","number of NO contacts delayed switching":"1","Finely Stranded With Core End Processing":"0.5 ... 2.5 m²","For Auxiliary And Control Current Circuit":"screw-type terminals","Product Extension Optional Remote Control":"No","Product Extension Required Remote Control":"No","Flashing Symmetrically Starting With Pulse":"No","Passing Make Contact/Instantaneous Contact":"No","Design Of The Control Terminal Non-Floating":"Yes","Flashing Asymmetrically Starting With Pulse":"No","number of CO contacts instantaneous contact":"0","number of NC contacts instantaneous contact":"0","number of NO contacts instantaneous contact":"0","Flashing Symmetrically Starting With Interval":"No","Retriggerable With Deactivated Control Signal":"No","Type Of Voltage Of The Control Supply Voltage":"AC/DC","electrostatic discharge acc. to IEC 61000-4-2":"4 kV contact discharge / 8 kV air discharge","Flashing Asymmetrically Starting With Interval":"No","Retrotriggerable With Activated Control Signal":"No","Switching Capacity Current With Inductive Load":"0.3 A","switching function with control signal OFF delay":"Yes","Mechanical Service Life (Switching Cycles) Typical":"100 000 000","Size Of Contactor Can Be Combined Company-Specific":"S00","due to conductor-earth surge acc. to IEC 61000-4-5":"2 kV","short-time withstand current (Icw) limited to 10 ms":"10 A","Removable Terminal For Auxiliary And Control Circuit":"No","Switching Function With Control Signal Pulse Delayed":"No","Switching Function With Control Signal Pulse-Shaping":"No","At The Relay Outputs Switchover Delayed/Without Delay":"No","Relative Setting Accuracy Relating To Full-Scale Value":"15 %","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Flashing Symmetrically Starting With Pulse/Instantaneous":"No","switching function with control signal additive ON delay":"No","Switching Function Fixed Clock Cycle Beginning With Pulse":"No","switching function with control signal ON-delay/OFF-delay":"No","Flashing Symmetrically Starting With Interval/Instantaneous":"No","Switching Function With Control Signal Passing Make Contact":"No","Switching Function Fixed Clock Cycle Beginning With Interval":"No","Switching Function With Control Signal Passing Break Contact":"No","switching function with control signal OFF delay/instantaneous":"No","Switching Function With Control Signal Pulse Delayed/Instantaneous":"No","Switching Function With Control Signal Pulse-Shaping/Instantaneous":"No","Retrotriggerable With Activated Control Signal/Instantaneous Contact":"No","Retrotriggerable With Deactivated Control Signal/Instantaneous Contact":"No","switching function with control signal additive ON delay/instantaneous":"No","Switching Function With Control Signal Passing Break Contact/Instantaneous":"No","Switching Function With Control Signal Passing Make Contact/Instantaneous Contact":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=6250&mlfb=3RT1916-2DH31","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1916-2DH31/alternatives.json"},"ai":{"faq":[{"question":"What is the adjustable time range on 3RT1916-2DH31?","answer":"The adjustable time range is 5 to 100 s, set via the front-panel controls."},{"question":"Will 3RT1916-2DH31 drop into a panel specified around 3RT1016-1BB42 without rewiring?","answer":"Both are SIRIUS contactor-mounted accessories sharing the same 45 mm width and clip-on DIN rail mounting, so mechanical fit is identical. However, 3RT1916-2DH31 is a timing relay with a semiconductor output and OFF-delay, while 3RT1016-1BB42 is a different device class — verify the control circuit wiring requirements before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1916-2DH31","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/3RT1916-2DH31 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}}