{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2047-1AH24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2047-1AH24","canonicalUrl":"https://aoctrl.com/siemens/3RT2047-1AH24","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2047-1AH24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S3, 3RT2047-1AH24, 24 VDC coil, screw-type terminals, auxiliary switch, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"The 24 VDC coil is controlled via screw-type terminals, and the contactor includes an integrated auxiliary switch for status feedback or interlocking. The contactor accepts a wide conductor range — solid from 2.5 to 16 mm² and stranded from 6 to 70 mm² for the main circuit — which covers most panel wiring from control to power distribution. ## Duty-cycle capability — the number that governs real use The headline switching frequency varies by duty class: 900 cycles/h at AC-1 (resistive), 850 at AC-3 (standard motor start/run), 350 at AC-2 (slip-ring motor), and 200 at AC-4 (plugging/inching). For most conveyor, pump, and fan applications, the AC-3 rating of 850 cycles/h is the practical limit — it tells you the contactor can handle frequent starts without overheating the arc chamber. The auxiliary contact ratings are specified per voltage: 6 A at 24 V DC, 2 A at 48 V DC, 1 A at 110 V DC, 0.9 A at 125 V DC, 0.3 A at 220 V DC, and 3 A at 400 V AC. These are the maximum switching currents for the auxiliary circuit — important when feeding PLC inputs or pilot lights. The contactor measures 70 mm wide, 140 mm high, and 195 mm deep.","metaTitle":"Siemens 3RT2047-1AH24 SIRIUS Power Contactor, Size S3, 24 VD","metaDescription":"Siemens 3RT2047-1AH24 SIRIUS power contactor, Size S3, 24 VDC coil. Screw terminals, auxiliary switch included. Rated for AC-3 switching at 850 cycles/h. Sourced to order against R","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"195 mm","Solid":"2.5 ... 16 mm²","Width":"70 mm","at AC":"10 ... 21 ms","title":"3RT2047-1AH24","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"6 ... 70 mm²","at 50 Hz":"0.38","at 60 Hz":"0.85 ... 1.1","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","description":"power contactor, AC-3e/AC-3, 110 A, 55 kW / 400 V, 3-pole, 48 V AC, 50/60 Hz, auxiliary contacts: 2 NO + 2 NC, screw terminal, size: S3, removable auxiliary switch","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"900 1/h","at AC-2 maximum":"350 1/h","at AC-3 maximum":"850 1/h","at AC-4 maximum":"200 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","at AC-3e maximum":"850 1/h","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":"Power contactor","at 24 V rated value":"6 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":"20 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.8 A","at 480 V rated value":"96 A","at 50 Hz rated value":"48 V","at 500 V rated value":"2 A","at 60 Hz rated value":"48 V","at 600 V rated value":"99 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"37 kW","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"10 hp","at 200/208 V rated value":"30 hp","at 220/230 V rated value":"40 hp","at 460/480 V rated value":"75 hp","at 575/600 V rated value":"100 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","Safety-Related Switching On":"Yes","at AC-3 rated value maximum":"1 000 V","at AC in hot operating state":"23.7 W","at AC-2 at 400 V rated value":"55 kW","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"97 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"03/01/2017","at AWG cables for main contacts":"2x (10 ... 1/0), 1x (10 ... 2)","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"120 A","at AC-5b up to 400 V rated value":"110 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 200A (690V,100kA), aM: 100A (690V,100kA), BS88: 160A (415V,80kA)","Without Load Current Share Typical":"19 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 250 A (690 V, 100 kA), aM: 160 A (690 V, 100 kA), BS88: 200 A (415 V, 80 kA)","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":"7.9 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":"1 960 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"1 502 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"1 095 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"707 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"562 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":"1 000 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":"50 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7d28fa7380658c541019ac8751bc4da6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=906510&mlfb=3RT2047-1AH24"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT2047-1AH24?","answer":"The 3RT1055-6QF35 is a peer in the SIRIUS family but differs in coil voltage, terminal type, and auxiliary contact configuration. A direct drop-in replacement without rewiring should be verified against the specific panel wiring and control voltage."},{"question":"What compliance documentation is available for 3RT2047-1AH24?","answer":"As a Siemens SIRIUS product, it typically carries CE, UL, CSA, and RoHS/REACH declarations. Specific certificates should be confirmed at time of order against the required jurisdiction."},{"question":"How do I get current pricing and availability for 3RT2047-1AH24?","answer":"Submit an RFQ through this listing. Pricing and lead time are confirmed at quote time based on current market conditions and available inventory."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2047-1AH24","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/3RT2047-1AH24 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}}