{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2346-1AC20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2346-1AC20","canonicalUrl":"https://aoctrl.com/siemens/3RT2346-1AC20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2346-1AC20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Size S3 contactor, 3RT2346-1AC20, 24 V AC 50/60 Hz coil, screw-type terminals, 2 NO + 2 NC main contacts, 10 A rated at 24 V, DIN rail mount.","salesMarkdown":"## SIRIUS Size S3 Contactor — 24 V AC Coil, Screw Terminals The Siemens SIRIUS 3RT2346-1AC20 is a Size S3 contactor with a 24 V AC coil rated for both 50 Hz and 60 Hz operation. It carries 2 NO and 2 NC main contacts, with screw-type terminals on the coil and main circuit. The contactor mounts on a 35 mm DIN rail per DIN EN 60715, with screw and snap-on fastening; the mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward, giving panel builders flexibility in tight enclosures. Rated operational currents span the auxiliary contact range: 10 A at 24 V, 6 A at 60 V, 6 A at 230 V, 3 A at 400 V, and 2 A at 500 V. The arcing time falls between 10 and 20 ms for AC loads, and the contactor withstands shock at 10.6 g / 5 ms and 6.3 g / 10 ms for DC conditions. ## Mounting and Clearance Requirements The S3 frame measures 96 mm wide, 140 mm high, and 152 mm deep. The main circuit accepts stranded conductors from 6 to 70 mm²; the auxiliary circuit accepts solid or stranded 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²).","metaTitle":"Siemens 3RT2346-1AC20 SIRIUS Contactor, 24 VAC Coil, Size S3","metaDescription":"Siemens SIRIUS 3RT2346-1AC20 Size S3 contactor, 24 VAC 50/60 Hz coil. Screw terminals, 2 NO/2 NC main contacts. DIN rail mount. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"96 mm","at AC":"10 ... 21 ms","at DC":"10.6 g / 5 ms, 6.3 g / 10 ms","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"6 ... 70 mm²","at 50 Hz":"0.35","at 60 Hz":"0.41","Downwards":"10 mm","Attachable":"2","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"AC","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","For Main Contacts":"10 ... 2","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S3","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"6 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"24 V","at 500 V rated value":"2 A","at 60 Hz rated value":"24 V","at 600 V rated value":"0.1 A","at 690 V rated value":"1 A","Instantaneous Contact":"1","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","at AC in hot operating state":"47.2 W","Substance Prohibitance (Date)":"09/01/2017","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gR: 250 A (690 V, 100 kA)","At Contactor For Auxiliary Contacts":"Screw-type terminals","operating frequency at AC-1 maximum":"1 000 1/s","With Type Of Coordination 1 Required":"gG: 250 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"11.8 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","number of NO contacts for main contacts":"4","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"4","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"AC","Limited To 1 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (690 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"50 mm²","Of The Auxiliary And Control Circuit With Degree Of Pollution 3 Rated Value":"690 V","Design Of The Miniature Circuit Breaker For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (230 V, 400 A)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/589d2506d1b6308a8f97adbcbc16094e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=630037&mlfb=3RT2346-1AC20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2346-1AC20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RT2346-1AC20 and get a price?","answer":"This part is available to order against an RFQ through independent industrial automation distribution. Current pricing and lead time are confirmed at the time of quotation."},{"question":"What are the key specifications of the 3RT2346-1AC20?","answer":"It is a Siemens SIRIUS Size S3 contactor with a 24 V AC 50/60 Hz coil, screw-type terminals, 2 NO + 2 NC main contacts, rated 10 A at 24 V, and mounts on 35 mm DIN rail. Dimensions are 96 x 140 x 152 mm."},{"question":"Will the 3RT2346-1AC20 drop into a panel specified for the 3RT2326-1BK80?","answer":"Both are SIRIUS contactors, but the 3RT2326-1BK80 is a different variant. The 3RT2346-1AC20 has a 24 V AC coil and screw terminals; verify the coil voltage and terminal type match your existing wiring before substitution."},{"question":"What compliance documentation is available for the 3RT2346-1AC20?","answer":"As a Siemens SIRIUS product, it is designed to meet IEC and UL standards. Documentation such as RoHS and REACH declarations is typically provided with the product or available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2346-1AC20","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/3RT2346-1AC20 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}}