{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1916-2GC51","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1916-2GC51","canonicalUrl":"https://aoctrl.com/siemens/3RT1916-2GC51","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1916-2GC51","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, 3RT1916-2GC51, 45 mm width, clip-on mounting, 1 A at 24 V, 0.1 A at 250 V, IP20, adjustable time delay 1.5...30 s.","salesMarkdown":"## SIRIUS auxiliary switch for contactor and starter add-ons It measures 45 mm wide by 38 mm tall by 75 mm deep — a compact block that doesn't eat up DIN rail space you'd rather keep for the next breaker. Rated 1 A at 24 V, 0.2 A at 125 V, and 0.1 A at 250 V, it handles typical PLC input and signal-level loads without drama. The adjustable time delay spans 1.5 to 30 seconds, which covers off-delay scenarios like staggered pump starts or conveyor sequencing. Clip-on mounting means no screws, no tools — you push it onto the contactor or starter's side profile and it latches. Wire range accepts 18 to 14 AWG solid or stranded, so you're not fighting with oversized conductors. The terminal block is rated IP20 — finger-safe for the panel interior, but keep it behind the gland plate if the enclosure sees washdown. Compliance covers EN 61000-6-2 (industrial EMC immunity) and basic insulation per IEC, pollution degree 3. That means it's built for the dirty electrical environment inside a control cabinet with contactors and drives nearby.","metaTitle":"Siemens 3RT1916-2GC51 SIRIUS Auxiliary Switch, 45mm Wide","metaDescription":"Siemens 3RT1916-2GC51 SIRIUS auxiliary switch, 45mm wide, clip-on mount. Rated 1A at 24V, 0.1A at 250V. Currently in active production. Sourced to order against RFQ.","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":"No","Stranded":"18 ... 14","at 125 V":"0.2 A","at 250 V":"0.1 A","at 50 Hz":"100 ... 127 V","at 60 Hz":"100 ... 127 V","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":"1.5 ... 30 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","ON-delay/OFF-delay":"No","Product brand name":"SIRIUS","Star-Delta Circuit":"Yes","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","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":"100 000","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":"Yes","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","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":"$47.55","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=75750&mlfb=3RT1916-2GC51","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1916-2GC51/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1916-2GC51?","answer":"This part is available to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is 3RT1916-2GC51's depth?","answer":"The depth is 75 mm, with a width of 45 mm and height of 38 mm."},{"question":"What are the contact ratings on this auxiliary switch?","answer":"Rated 1 A at 24 V, 0.2 A at 125 V, and 0.1 A at 250 V — suitable for PLC inputs, signal lamps, and control relays."},{"question":"Will 3RT1916-2GC51 drop into a panel specified around 3RT1016-1BB42?","answer":"Both are SIRIUS auxiliary switches with clip-on mounting, so the mechanical fit on the same contactor family is the same. The 3RT1916-2GC51 adds an adjustable time delay (1.5...30 s) that the 3RT1016-1BB42 lacks — verify your circuit needs a timed contact before swapping."},{"question":"What compliance documentation is available for this part?","answer":"The switch carries basic insulation per IEC, pollution degree 3, and meets EN 61000-6-2 industrial EMC immunity. Standard Siemens SIRIUS documentation (CE, RoHS, REACH) applies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1916-2GC51","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/3RT1916-2GC51 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}}