{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1916-2EJ31","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1916-2EJ31","canonicalUrl":"https://aoctrl.com/siemens/3RT1916-2EJ31","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1916-2EJ31","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, 3RT1916-2EJ31, ON-delay adjustable 5-100 s, clip-on mount, IP20, 1 A at 24 V.","salesMarkdown":"It provides a timed auxiliary contact that closes after a set delay when the main device picks up. The delay is adjustable from 5 to 100 seconds, set via a potentiometer or DIP switch on the module. The ON-delay means the contact closes after the delay period once the coil is energized; there is no OFF-delay function. The auxiliary contact is rated 1 A at 24 V DC, 0.2 A at 125 V DC, and 0.1 A at 250 V DC. These are the switching capacities for DC loads — the current drops as voltage rises because of arc extinction limits. For a 24 V DC control circuit, the contact can handle 1 A, which covers most PLC digital inputs and relay coils. The IP20 terminal protection means it's safe from finger contact but not from water ingress — install inside a panel. It mounts via clip-on to a DIN rail or directly onto a SIRIUS contactor. The dimensions are 45 mm wide, 38 mm high, and 75 mm deep, so it occupies one standard modular width. This auxiliary switch is used in motor control centers and panel builds where a delayed auxiliary contact is needed — for example, to sequence a star-delta starter, delay a fan start after a pump, or interlock a secondary process. The clip-on form factor means it integrates directly onto a SIRIUS contactor without extra wiring.","metaTitle":"Siemens 3RT1916-2EJ31 SIRIUS Auxiliary Switch, ON-Delay 5-10","metaDescription":"Siemens 3RT1916-2EJ31 SIRIUS auxiliary switch with ON-delay, adjustable 5-100 s. Clip-on mount, IP20. Contact ratings: 1 A at 24 V, 0.2 A at 125 V, 0.1 A at 250 V. Current producti","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"75 mm","Solid":"18 ... 14","Width":"45 mm","Height":"38 mm","Maximum":"2 000 m","Typical":"10 000 000","Upwards":"0 m","at 24 V":"1 A","Forwards":"0 m","ON-delay":"Yes","Stranded":"18 ... 14","at 125 V":"0.2 A","at 250 V":"0.1 A","Backwards":"0 m","Downwards":"0 m","OFF delay":"No","At The Side":"0 m","Non-Volatile":"No","Initial Value":"0.85","Mounting type":"clip-on","Pulse Delayed":"No","Pulse-Shaping":"No","Recovery time":"150 ms","Adjustable time":"5 ... 100 s","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"15 ... 95 %","Full-scale value":"1.1","Delayed Switching":"0","Mounting position":"any","additive ON delay":"No","at DC rated value":"24 V","ON-delay/OFF-delay":"No","Product brand name":"SIRIUS","Star-Delta Circuit":"No","Type of insulation":"Basic insulation","Degree of pollution":"3","Product designation":"auxiliary switch","acc. to IEC 61812-1":"EN 61000-6-2","Passing Make Contact":"No","at 50 Hz rated value":"24 V","at 60 Hz rated value":"24 V","Instantaneous Contact":"0","Passing Break Contact":"No","Semi-Conductor Output":"No","acc. to IEC 60068-2-6":"10 ... 55 Hz: 0.35 mm","acc. to IEC 60068-2-27":"11g / 15 ms","OFF delay/instantaneous":"No","at AWG conductors solid":"2x (20 ... 14)","Relative repeat accuracy":"1 %","at AC-15 at 230 V typical":"50 000","at AWG conductors stranded":"2x (20 ... 14)","Pulse Delayed/Instantaneous":"No","Pulse-Shaping/Instantaneous":"No","Design of the surge suppressor":"with varistor","ON-delay/instantaneous contact":"No","additive ON delay/instantaneous":"No","ON-delay/OFF-delay/instantaneous":"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","Passing Break Contact/Instantaneous":"No","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 61346-2":"K","Reference code acc. to DIN EN 81346-2":"K","Fixed Clock Cycle Beginning With Pulse":"No","With Degree Of Pollution 3 Rated Value":"300 V","Finely Stranded With Core End Processing":"0.5 ... 2.5 m²","Fixed Clock Cycle Beginning With Interval":"No","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":"No","Flashing Asymmetrically Starting With Pulse":"No","Electrostatic discharge acc. to IEC 61000-4-2":"4 kV contact discharge / 8 kV air discharge","Flashing Symmetrically Starting With Interval":"No","Retriggerable With Deactivated Control Signal":"No","Type of voltage of the control supply voltage":"AC/DC","Flashing Asymmetrically Starting With Interval":"No","Retrotriggerable With Activated Control Signal":"No","Size of contactor can be combined company-specific":"S00","due to conductor-earth surge acc. to IEC 61000-4-5":"2 kV","Removable Terminal For Auxiliary And Control Circuit":"No","at the relay outputs Switchover delayed/without delay":"No","Relative setting accuracy relating to full-scale value":"15 %","Flashing Symmetrically Starting With Pulse/Instantaneous":"No","Flashing Symmetrically Starting With Interval/Instantaneous":"No","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 4 A","Retrotriggerable With Activated Control Signal/Instantaneous Contact":"No","Retrotriggerable With Deactivated Control Signal/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=53092&mlfb=3RT1916-2EJ31","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1916-2EJ31/alternatives.json"},"ai":{"faq":[{"question":"What are the contact ratings?","answer":"The auxiliary contact is rated 1 A at 24 V DC, 0.2 A at 125 V DC, and 0.1 A at 250 V DC."},{"question":"What is the adjustable time range?","answer":"The ON-delay is adjustable from 5 to 100 seconds."},{"question":"What wire sizes does it accept?","answer":"It accepts solid or stranded conductors from 18 to 14 AWG."},{"question":"What is the mounting method?","answer":"It mounts via clip-on, typically onto a DIN rail or directly onto a SIRIUS contactor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1916-2EJ31","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/3RT1916-2EJ31 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}}