{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2024-1AU20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2024-1AU20","canonicalUrl":"https://aoctrl.com/siemens/3RT2024-1AU20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2024-1AU20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2024-1AU20, power contactor, size S0, 24 VDC coil, screw-type terminals, 45 mm width, 97 mm depth.","salesMarkdown":"## Integrator Note It switches loads up to 10 A at 24 VDC and 2 hp at 230 V, making it suited for smaller motor and resistive loads in control panels. ## Switching Capacity & Duty Rated switching capacity varies by voltage: 10 A at 24 VDC, 2 A at 48/60 VDC, 1 A at 110 VDC, and 0.3 A at 220 VDC. For motor loads, it carries a 2 hp rating at 230 V. Maximum mechanical switching frequency is 1 000 operations per hour under AC-1, AC-2, and AC-3 duty; this drops to 300 per hour under AC-4 (frequent inching/plugging). Wire range: solid or stranded 1 to 10 mm² for main contacts, with dual-wire capability (2x 0.5 to 1.5 mm² or 2x 0.75 to 2.5 mm²). Main contact screws are M4 (size 8). Coil holding power is 0.25 VA at 50 Hz, 0.28 VA at 60 Hz.","metaTitle":"Siemens SIRIUS 3RT2024-1AU20 Power Contactor, S0, 24 VDC Coi","metaDescription":"Siemens 3RT2024-1AU20 SIRIUS power contactor, size S0, 24 VDC coil, screw terminals. Rated for 10 A at 24 VDC. Active lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"97 mm","Solid":"1 ... 10 mm²","Width":"45 mm","at AC":"4 ... 16 ms","Height":"85 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","at 50 Hz":"0.25","at 60 Hz":"0.28","Downwards":"10 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"1 000 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","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","at AC-3e maximum":"1 000 1/h","For Main Contacts":"16 ... 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 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Power contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 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":"2 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"11 A","at 50 Hz rated value":"380 V","at 500 V rated value":"2 A","at 60 Hz rated value":"380 V","at 600 V rated value":"11 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"1 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"3 hp","at 460/480 V rated value":"7.5 hp","at 575/600 V rated value":"10 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"0.9 W","at AC-2 at 400 V rated value":"5.5 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"12.5 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"35.2 A","at AC-5b up to 400 V rated value":"9.9 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)","Without Load Current Share Typical":"7.9 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"0.3 W","number of NO contacts for main contacts":"3","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":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC","Limited To 1 S Switching At Zero Current Maximum":"210 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"210 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"170 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"126 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"105 A; 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","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"10 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=290161&mlfb=3RT2024-1AU20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2024-1AU20/alternatives.json"},"ai":{"faq":[{"question":"What are the key switching ratings for the 3RT2024-1AU20?","answer":"It switches 10 A at 24 VDC, 2 A at 48/60 VDC, 1 A at 110 VDC, 0.3 A at 220 VDC, and 3 A at 400 VDC. For motor loads, it is rated 2 hp at 230 V. Maximum switching frequency is 1 000 operations/hour under AC-1/2/3 duty, and 300/hour under AC-4."},{"question":"Does the 3RT2024-1AU20 include an auxiliary contact?","answer":"Yes, it is equipped with an auxiliary switch for status signaling or interlocking."},{"question":"What is the mounting footprint and clearance needed for the 3RT2024-1AU20?","answer":"It is 45 mm wide, 85 mm high, and 97 mm deep. Clearance: 10 mm upwards, downwards, and forwards; 6 mm at the sides. It mounts on a 35 mm DIN rail or via screws."},{"question":"What wire sizes does the 3RT2024-1AU20 accept?","answer":"Main contacts accept solid or stranded wire from 1 to 10 mm². Dual-wire capability: 2x 0.5 to 1.5 mm² or 2x 0.75 to 2.5 mm². Coil terminals are screw-type."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2024-1AU20","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/3RT2024-1AU20 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}}