{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1916-2GJ51","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1916-2GJ51","canonicalUrl":"https://aoctrl.com/siemens/3RT1916-2GJ51","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1916-2GJ51","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1916-2GJ51 auxiliary switch, clip-on mounting, 3 A maximum, 24 VDC rated, adjustable time 1.5-30 s.","salesMarkdown":"The Siemens SIRIUS 3RT1916-2GJ51 is a clip-on auxiliary switch designed for use with SIRIUS contactors and other switching devices in control panels. It provides additional contact sets for signaling or control logic, with an adjustable time delay of 1.5 to 30 seconds, making it suitable for star-delta starting circuits. Rated for a maximum of 3 A, with specific switching capacities of 1 A at 24 VDC, 0.2 A at 125 VDC, and 0.1 A at 250 VDC, this switch handles low-power control signals reliably. The 150 ms recovery time ensures it resets quickly between operations in sequential logic. Clip-on fastening to a DIN rail or directly onto the contactor body simplifies panel assembly. If your quality team needs specific declarations, those are part of the standard documentation package for this product line. ## Integration Notes Clip-on mounting means it snaps directly onto a SIRIUS contactor or onto a DIN rail without tools. The adjustable time delay (1.5–30 s) is set via a potentiometer on the front face — no software or programming needed. The switch supports star-delta circuits, so it's a natural fit for motor starting applications where timed transition between star and delta windings is required. Basic insulation and pollution degree 3 ratings mean it's suitable for standard industrial environments without special isolation measures. The 24 VDC rated coil (with a pickup threshold of 0.85 and full-scale value of 1.1) ensures reliable operation on standard 24 V control supplies.","metaTitle":"Siemens SIRIUS 3RT1916-2GJ51 Auxiliary Switch, 3 A, 24 VDC","metaDescription":"Siemens SIRIUS 3RT1916-2GJ51 auxiliary switch, 3 A max, 24 VDC rated. Clip-on mounting, adjustable time 1.5-30 s. Current production. Sourced to order.","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":"3 A","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","Backwards":"0 m","Downwards":"0 m","OFF delay":"No","At The Side":"0 m","Non-Volatile":"No","Initial Value":"0.85","Pulse Delayed":"No","Pulse-Shaping":"No","Recovery Time":"150 ms","During Storage":"-40 ... +85 °C","Adjustable Time":"1.5 ... 30 s","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +85 °C","Fastening Method":"clip-on","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":"Yes","Type Of Insulation":"Basic insulation","Degree Of Pollution":"3","Product Designation":"auxiliary switch","at AWG cables solid":"2x (20 ... 14)","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","at AWG cables stranded":"2x (20 ... 14)","OFF delay/instantaneous":"No","Relative Repeat Accuracy":"1 %","Pulse Delayed/Instantaneous":"No","Pulse-Shaping/Instantaneous":"No","Substance Prohibitance (Date)":"01.07.2006 00:00:00","Design Of The Surge Suppressor":"with varistor","ON-delay/instantaneous contact":"No","additive ON-delay/instantaneous":"No","EMC immunity acc. to IEC 61812-1":"EN 61000-6-2","ON-delay/OFF-delay/instantaneous":"No","Variably Clocked With Pulse Start":"No","Control Supply Voltage Frequency 1":"50 ... 60 Hz","Relative Humidity During Operation":"15 ... 95 %","Star-Delta Circuit With Delay Time":"No","due to burst acc. to IEC 61000-4-4":"2 kV network connection / 1 kV control connection","reference code acc. to IEC 81346-2":"K","Passing Break Contact/Instantaneous":"No","Product Function Star-Delta Circuit":"Yes","protection class IP of the terminal":"IP20","Surge Voltage Resistance Rated Value":"4 000 V","Variably Clocked With Interval Start":"No","Constant Clock Cycle With Pulse Start":"No","Flashing Symmetrically With Pulse Start":"No","Product Component Semi-Conductor Output":"No","shock resistance acc. to IEC 60068-2-27":"11g / 15 ms","Constant Clock Cycle With Interval Start":"No","Finely Stranded With Core End Processing":"0.5 ... 2.5 m²","Flashing Asymmetrically With Pulse Start":"No","Product Extension Optional Remote Control":"No","Product Extension Required Remote Control":"No","Flashing Symmetrically With Interval Start":"No","Passing Make Contact/Instantaneous Contact":"No","vibration resistance acc. to IEC 60068-2-6":"10 ... 55 Hz: 0.35 mm","Design Of The Control Terminal Non-Floating":"No","Flashing Asymmetrically With Interval Start":"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","field-based interference acc. to IEC 61000-4-3":"10 V/m","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","due to conductor-earth surge acc. to IEC 61000-4-5":"2 kV","protection class IP on the front acc. to IEC 60529":"IP20","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","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","Product Function 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":"$286.63","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=398190&mlfb=3RT1916-2GJ51","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1916-2GJ51/alternatives.json"},"ai":{"faq":[{"question":"What are the key contact ratings for this auxiliary switch?","answer":"Maximum switching current is 3 A. At 24 VDC it switches 1 A, at 125 VDC it switches 0.2 A, and at 250 VDC it switches 0.1 A. These ratings cover typical control and signaling loads in industrial panels."},{"question":"What is the adjustable time delay range?","answer":"The time delay is adjustable from 1.5 to 30 seconds, set via a front-panel potentiometer. This makes it suitable for star-delta motor starting or other timed switching sequences."},{"question":"How does this mount in a panel?","answer":"It uses clip-on fastening, snapping directly onto a SIRIUS contactor or onto a DIN rail. It can be mounted in any position, and its dimensions (45 mm wide, 38 mm high, 75 mm deep) fit standard enclosure layouts."},{"question":"What temperature range does it handle?","answer":"Operating range is -25 to +60 °C. Storage and transport range is -40 to +85 °C, covering most industrial environments and shipping conditions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1916-2GJ51","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/3RT1916-2GJ51 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}}