{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1024-1AL24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1024-1AL24","canonicalUrl":"https://aoctrl.com/siemens/3RT1024-1AL24","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1024-1AL24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, 3RT1024-1AL24, S0 frame, 24 VDC coil, 12.5 A AC-4 at 400 V, screw terminals, 45 mm width, DIN rail snap-on.","salesMarkdown":"## Siemens SIRIUS 3RT1024-1AL24 — Power Contactor, S0 Frame, 24 VDC Coil It carries a 24 VDC coil and is rated for AC-4 duty at 12.5 A at 400 V — that's the category for reversing or inching motor starts where the contactor makes and breaks the motor current at full load, not just the inrush. ## Motor Duty and Coordination For resistive loads (AC-12), the contactor handles up to 10 A. Type 1 coordination requires a 63 A gL/gG fuse; Type 2 coordination requires 25 A. That's the short-circuit protection the contactor needs to survive a fault without welding its main contacts — the 25 A fuse for Type 2 keeps let-through energy low enough that the contactor can be re-energised after clearing the fault. The auxiliary contact block carries 2 N/O instantaneous contacts, rated at 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — enough for feedback to a PLC or to seal in the coil circuit. Main circuit terminals accept screw-type connections: solid or stranded wire from 1 to 6 mm² (2x 1–2.5 mm², 2x 2.5–6 mm², max 2x 10 mm²). The coil terminals accept finer wire: 0.5 to 4 mm² (2x 0.5–1.5 mm², 2x 0.75–2.5 mm², max 2x 0.75–4 mm²). AWG equivalents are 2x 16–12 and 2x 14–10 for the main circuit, 1x 8 maximum. Side-by-side mounting is allowed with a 6 mm gap to the side, which means you can pack contactors tightly on the rail without derating, as long as the ambient stays within the -25 to +60 °C range.","metaTitle":"Siemens 3RT1024-1AL24 SIRIUS Power Contactor, 24 VDC Coil, S","metaDescription":"Siemens SIRIUS 3RT1024-1AL24 power contactor, 24 VDC coil, S0 frame, 12.5 A AC-4 at 400 V. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"140 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"85 mm","Maximum":"2 000 m","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Of The Terminal":"IP00","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Size of contactor":"S0","Product brand name":"SIRIUS","Degree of pollution":"3","Product designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 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":"230 V","at 500 V rated value":"7.5 kW","at 60 Hz rated value":"230 V","at 690 V rated value":"7.5 kW","Instantaneous Contact":"2","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²","at AC-2 at 400 V rated value":"5.5 kW","at AC-4 at 400 V rated value":"12.5 A","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 25 A","at AWG conductors for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","With Type Of Coordination 1 Required":"fuse gL/gG: 63 A","Reference code acc. to DIN EN 81346-2":"Q","Number of NC contacts for main contacts":"0","Number of NO contacts for main contacts":"3","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","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","at ambient temperature 40 °C rated value":"40 A","Apparent holding power of magnet coil at AC":"8.4 V·A","Apparent pick-up power of magnet coil at AC":"64 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.72","Inductive power factor with the holding power of the coil":"0.24","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Of The Contactor With Added Electronics-Compatible 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=181524&mlfb=3RT1024-1AL24","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1024-1AL24/alternatives.json"},"ai":{"faq":[{"question":"What is 3RT1024-1AL24's depth for panel layout?","answer":"The depth is 140 mm, with a width of 45 mm and height of 85 mm. That's the S0 frame envelope — it fits the standard Siemens contactor footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1024-1AL24","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/3RT1024-1AL24 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}}