{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2344-1AN20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2344-1AN20","canonicalUrl":"https://aoctrl.com/siemens/3RT2344-1AN20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2344-1AN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor, size S3, order code 3RT2344-1AN20, screw-type coil terminals, auxiliary switch, 10A at 24V AC, 152 mm depth.","salesMarkdown":"The Siemens 3RT2344-1AN20 is a SIRIUS-branded contactor in the size S3 frame. Size S3 tells you the physical envelope: 140 mm high, 96 mm wide, 152 mm deep. Plan for at least 20 mm forward clearance for arc chutes and wiring. The main contact wiring accepts stranded cable up to 70 mm². The 10 A rating at 24 V AC is the resistive-load figure. At 400 V AC the same contacts are rated 3 A, and at 600 V AC it drops to 0.1 A — that voltage derating curve matters if you are switching a control transformer primary or a small heater bank at line voltage. ## Deployment context The screw-type coil terminals are a field-service detail: you can land the control wires with a standard screwdriver, no special tool needed. The auxiliary switch is already attached, so you do not need to order a separate side-mount block for basic status feedback to a PLC input.","metaTitle":"Siemens 3RT2344-1AN20 SIRIUS Contactor, Size S3, 10A at 24V","metaDescription":"Siemens 3RT2344-1AN20 SIRIUS contactor, size S3. Rated 10A at 24V AC, screw-type coil terminals, auxiliary switch included. Quoted to order against an RFQ.","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","title":"3RT2344-1AN20","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","description":"contactor AC-1, 110 A, 400 V / 40 °C, 4-pole, 220 V AC, 50/60 Hz, auxiliary contacts: 1 NO + 1 NC, screw terminal, size: S3","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":"220 V","at 500 V rated value":"2 A","at 60 Hz rated value":"220 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":"29.2 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":"7.3 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":"35 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,"stockQuantity":0,"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=630028&mlfb=3RT2344-1AN20"},"ai":{"faq":[{"question":"What is the depth of 3RT2344-1AN20?","answer":"The depth is 152 mm. Plan for at least 20 mm forward clearance beyond that for arc chutes and wiring."},{"question":"What wire sizes does the main contact accept?","answer":"Stranded cable from 6 to 70 mm². The coil and auxiliary terminals accept solid or stranded from 0.5 to 2.5 mm²."},{"question":"Does 3RT2344-1AN20 include an auxiliary switch?","answer":"Yes, an auxiliary switch is included as standard equipment on this contactor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2344-1AN20","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/3RT2344-1AN20 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}}