{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2326-2AC20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2326-2AC20","canonicalUrl":"https://aoctrl.com/siemens/3RT2326-2AC20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2326-2AC20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor, size S0, 24 VAC 50/60 Hz coil, main contacts 18-8 A, spring-type coil terminals, screw and snap-on DIN rail mounting.","salesMarkdown":"The Siemens 3RT2326-2AC20 is a SIRIUS contactor in the S0 frame size, with a 24 VAC 50/60 Hz coil drawing 0.25 VA at 50 Hz and 0.28 VA at 60 Hz. Main contacts are rated 18 A at 400 V AC-3 and 8 A at 400 V AC-1 — the AC-3 figure governs motor switching up to that current, while AC-1 covers resistive loads. The coil terminates via spring-type terminals; main and auxiliary power connections accept solid 2x (0.5... 2.5 mm²) or stranded 1... 10 mm² wire. The S0 footprint is 60 mm wide, 102 mm tall, and 97 mm deep — plan for that depth when routing behind the gland plate. ## Switching performance and auxiliary contacts Arcing time is 10 ms; the AC switching time (closing + opening) spans 4 to 16 ms. The contactor comes with an auxiliary switch built in, and up to 2 additional auxiliary contact blocks can be attached.","metaTitle":"Siemens 3RT2326-2AC20 SIRIUS Contactor, S0, 24 VAC Coil, 18-","metaDescription":"Siemens SIRIUS contactor 3RT2326-2AC20, size S0, 24 VAC 50/60 Hz coil, main contacts rated 18-8 A. Screw and snap-on DIN rail mount. Current production. Sourced to order against RF","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"97 mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"60 mm","at AC":"4 ... 16 ms","Height":"102 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","at 50 Hz":"0.25","at 60 Hz":"0.28","Downwards":"10 mm","Attachable":"2","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-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":"18 ... 8","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":"S0","Solid Or Stranded":"2x (0.5 ... 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":"10 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":"spring-loaded terminals","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC in hot operating state":"9.6 W","at AC-3 at 400 V rated value":"7.5 kW","at AC-4 at 400 V rated value":"7.5 kW","Substance Prohibitance (Date)":"10/01/2009","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG: 20 A (690 V, 100 kA)","At Contactor For Auxiliary Contacts":"Spring-type terminals","operating frequency at AC-1 maximum":"1 000 1/h","With Type Of Coordination 1 Required":"gG: 63 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"2.4 W","for AWG cables for auxiliary contacts":"2x (20 ... 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)","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","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","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 / Q600","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":"10 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/b7f38e9f9d86e59b04eac68bfea90c40.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=260468&mlfb=3RT2326-2AC20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2326-2AC20/alternatives.json"},"ai":{"faq":[{"question":"What are the main contact ratings for the 3RT2326-2AC20?","answer":"Main contacts are rated 18 A at 400 V AC-3 (motor duty) and 8 A at 400 V AC-1 (resistive duty). The AC-3 figure is the one that governs motor switching."},{"question":"Where can I buy the 3RT2326-2AC20 and get current pricing?","answer":"This contactor is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at the time of quote — submit an RFQ for a firm commercial response."},{"question":"What is the depth of the 3RT2326-2AC20?","answer":"The depth is 97 mm, which is the dimension from the DIN rail mounting surface to the front of the contactor body."},{"question":"What wire sizes does the 3RT2326-2AC20 accept?","answer":"Solid wire: 2x (0.5... 2.5 mm²). Stranded wire: 1... 10 mm². Coil terminals are spring-type."},{"question":"Will the 3RT2326-2AC20 drop into a panel designed for the 3RT2015-2AP02?","answer":"Not without mechanical changes. The 3RT2326-2AC20 is a size S0 frame (60 mm wide), while the 3RT2015-2AP02 is a smaller S00 frame — the DIN rail footprint and mounting hole pattern differ. Verify panel cutout and wiring before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2326-2AC20","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/3RT2326-2AC20 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}}