{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2024-1AH20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2024-1AH20","canonicalUrl":"https://aoctrl.com/siemens/3RT2024-1AH20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2024-1AH20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3RT2024-1AH20, 24 VDC coil, screw-type terminals, 10 A rated current at 24 V, 3 A at 400 V.","salesMarkdown":"## Product Identification and Key Ratings Per the datasheet, the contactor is rated for a mechanical service life of 10,000,000 operating cycles, and its main contacts accept solid or stranded conductors from 1 to 10 mm². The headline switching capacity is defined by the rated operational currents: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, and 0.6 A at 440 V. For motor loads at 230 V, it is rated for 2 hp. These values define the contactor's capability across common control and distribution voltages — the 400 V rating of 3 A, for example, confirms it can switch a small three-phase motor or a resistive heater bank at that voltage level. The contactor supports a maximum switching frequency of 1,000 operating cycles per hour under AC-1, AC-2, AC-3, and AC-3e duty, and 300 cycles per hour under AC-4 duty. The arcing time is specified as 10 ms at AC. These figures matter for applications with frequent start/stop cycles — AC-4 duty (plugging or inching) is the most demanding, and the lower 300 cycles/h limit reflects the increased contact wear under those conditions. Its dimensions are 85 mm height, 45 mm width, and 97 mm depth — the S0 frame size fits into the common panel layout alongside other S0 components. These clearances must be maintained inside the panel to avoid thermal derating or arc flash to adjacent components. The auxiliary contact terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded conductors. The coil terminal type is screw-type, consistent with the main terminals.","metaTitle":"Siemens 3RT2024-1AH20 SIRIUS Power Contactor, S0 Size, 24 VD","metaDescription":"Siemens 3RT2024-1AH20 SIRIUS power contactor, size S0. 24 VDC coil, screw terminals. Rated 10 A at 24 V, 3 A at 400 V. Current production. DIN-rail mount. RFQ for pricing.","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":"48 V","at 500 V rated value":"2 A","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":"https://cdn.aoctrl.com/47cf2a0935be5b4410f071334bc4e30c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=179589&mlfb=3RT2024-1AH20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2024-1AH20/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this contactor?","answer":"The contactor is rated for 10 A at 24 V, 3 A at 400 V, and 2 hp at 230 V for motor loads. The maximum switching frequency is 1,000 cycles/h under AC-3 duty and 300 cycles/h under AC-4 duty. Mechanical service life is 10,000,000 cycles."},{"question":"What mounting and clearance requirements apply?","answer":"The contactor mounts on a 35 mm DIN rail per DIN EN 60715. Required clearances: 10 mm upwards, 10 mm downwards, 10 mm forwards, and 6 mm at the side. Dimensions are 85 x 45 x 97 mm (H x W x D)."},{"question":"What compliance documentation is available for this part?","answer":"The manufacturer provides RoHS, REACH, UL, and IEC compliance documentation. These are available upon request as part of the standard technical documentation package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2024-1AH20","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/3RT2024-1AH20 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}}