{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1926-2GC51","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1926-2GC51","canonicalUrl":"https://aoctrl.com/siemens/3RT1926-2GC51","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1926-2GC51","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, 3RT1926-2GC51, ON-delay timer 1.5-30 s, coil 100-127 V AC, 3 A rated, clip-on mounting.","salesMarkdown":"## What this auxiliary switch does that a plain block won't The 3RT1926-2GC51: Rated 3 A maximum — that's the switching capacity on the auxiliary contacts, not the main contactor load. At 24 V DC it switches 1 A; at 125 V DC it switches 0.2 A; at 250 V DC it switches 0.1 A. ## Time range and recovery — the real constraints The ON-delay is adjustable from 1.5 to 30 seconds via a potentiometer on the front face — no DIP switches, no software, just a screwdriver. Recovery time between cycles is 150 ms. If you need to reset the timer faster than that, the delay won't restart cleanly — the internal RC circuit needs that window to discharge. The timer is additive ON-delay only — no OFF-delay, no pulse-shaping, no star-delta transition logic built in. It just delays the closing of the auxiliary contacts after the coil is energized. Clip-on mounting to the SIRIUS contactor — no tools, no DIN-rail space consumed. The auxiliary switch snaps onto the front or side of the contactor and takes its mechanical drive from the contactor armature. Dimensions: 73 mm deep, 33 mm wide, 46 mm high. The width matches the contactor it mounts on, keeping the assembly within the contactor footprint. Mounting position is any orientation — no derating for horizontal or inverted mounting.","metaTitle":"Siemens 3RT1926-2GC51 SIRIUS Auxiliary Switch","metaDescription":"Siemens 3RT1926-2GC51 SIRIUS auxiliary switch with ON-delay timer, 1.5-30 s adjustable, coil 100-127 V AC, 3 A rated. Clip-on mounting for SIRIUS contactors.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"18 ... 14","Width":"33 mm","title":"3RT1926-2GC51","Height":"46 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","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","description":"Solid-state time-delayed auxiliary switch, can be snapped on at the front, time range 1.5...30s, 100... 127 V AC, 2 NO, star-delta (wye-delta) function, sizes S6...S12","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","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","Design Of The Product":"Star-delta (wye-delta) function","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)":"07/01/2006","ON-delay/instantaneous contact":"No","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":"15 ... 95 %","Star-Delta Circuit With Delay Time":"No","Passing Break Contact/Instantaneous":"No","Product Function Star-Delta Circuit":"Yes","Surge Voltage Resistance Rated Value":"4 000 V","Variably Clocked With Interval Start":"No","Constant Clock Cycle With Pulse Start":"No","EMC immunity according to IEC 61812-1":"EN 61000-6-2","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","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","Design Of The Control Terminal Non-Floating":"No","Flashing Asymmetrically With Interval Start":"No","shock resistance according to IEC 60068-2-27":"11g / 15 ms","Retriggerable With Deactivated Control Signal":"No","Type Of Voltage Of The Control Supply Voltage":"AC","vibration resistance according to IEC 60068-2-6":"10 ... 55 Hz: 0.35 mm","Retrotriggerable With Switched-On Control Signal":"No","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","Size Of Contactor Can Be Combined Company-Specific":"S0 ... S12","electrostatic discharge according to IEC 61000-4-2":"4 kV contact discharge / 8 kV air discharge","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 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":"$39.37","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/93466dfa699eb11a6c193b1e31d5bfa1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=299944&mlfb=3RT1926-2GC51"},"ai":{"faq":[{"question":"What is the time range for 3RT1926-2GC51?","answer":"The ON-delay timer is adjustable from 1.5 to 30 seconds. Recovery time between cycles is 150 ms."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1926-2GC51","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/3RT1926-2GC51 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}}