{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1926-2GJ51","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1926-2GJ51","canonicalUrl":"https://aoctrl.com/siemens/3RT1926-2GJ51","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1926-2GJ51","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, order code 3RT1926-2GJ51, rated 3 A, clip-on mounting for contactor ranges, star-delta compatible.","salesMarkdown":"## What this auxiliary switch does The 3RT1926-2GJ51: Rated 3 A maximum, it handles control-circuit loads typical in 24 VDC panels. The switch is designed for star-delta starting circuits, meaning it can be wired into the transition sequence without extra isolation. Clip-on fastening method — snaps directly onto the contactor without tools. The 33 mm width and 46 mm height keep the assembly within a standard DIN-rail footprint. Depth is 73 mm, which includes the terminal projection; account for this when spacing components in the enclosure. Mounting position is any orientation, so it fits horizontal or vertical bus arrangements without derating. ## Switching ratings and wiring At 24 VDC the switch is rated 1 A; at 125 VAC it handles 0.2 A, and at 250 VAC it handles 0.1 A. These are the contact ratings for the control circuit — stay within them to avoid welding the silver-alloy contacts. Wire range accepts solid or stranded 18–14 AWG (2x 20–14 AWG for solid), which covers most panel control wiring.","metaTitle":"Siemens 3RT1926-2GJ51 SIRIUS Auxiliary Switch, 3 A","metaDescription":"Siemens 3RT1926-2GJ51 SIRIUS auxiliary switch, 3 A rated, clip-on mount for contactors. Star-delta compatible. Current production. Quoted to order.","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":"3RT1926-2GJ51","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","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, 24 V AC/DC, 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","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","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/DC","vibration resistance according to IEC 60068-2-6":"10 ... 55 Hz: 0.35 mm","Retrotriggerable With Switched-On Control Signal":"No","Mechanical Service Life (Switching 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":"$130.08","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/42c284e98dff3475ffac7bafedbaaa53.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=131534&mlfb=3RT1926-2GJ51"},"ai":{"faq":[{"question":"Is the 3RT1926-2GJ51 obsolete or being discontinued?","answer":"No discontinuation notice has been issued."},{"question":"Is the 3RT1926-2GJ51 compatible with star-delta starting?","answer":"Yes — the product designation includes star-delta circuit compatibility, so it can be used in the transition logic of a star-delta starter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1926-2GJ51","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/3RT1926-2GJ51 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}}