{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1024-1AD20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1024-1AD20","canonicalUrl":"https://aoctrl.com/siemens/3RT1024-1AD20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1024-1AD20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1024-1AD20 power contactor, size S0, 7.5 kW at 690 V AC-3, screw terminals, 24 VDC coil, DIN rail mount.","salesMarkdown":"The AC-3 rating at 400 V is 7.5 kW, and at 690 V it also delivers 7.5 kW — meaning this contactor handles standard 400 V motors up to 7.5 kW and can also switch 690 V motors at the same power, useful in 690 V distribution systems or variable-speed drive output circuits. ## Mounting and integration into a panel The front of the contactor is IP20 (finger-safe), while the terminals are IP00 — so the wiring zone is exposed and requires the panel enclosure for touch protection. ## Wiring and conductor sizing Main circuit screw terminals accept 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or max 2x 10 mm² — fine-stranded or solid. For AWG, that's 2x (16 to 12), 2x (14 to 10), or 1x 8. Auxiliary contacts (if fitted) take 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²). Strip length and torque values are on the nameplate label. For short-circuit protection, Type 2 coordination (no welding on fault) requires a gL/gG fuse of 25 A. Type 1 coordination (welding allowed but no fire risk) allows a 63 A fuse. This matters when specifying the upstream motor protection circuit breaker or fuse holder.","metaTitle":"Siemens 3RT1024-1AD20 SIRIUS Power Contactor, S0, 7.5 kW at","metaDescription":"Siemens 3RT1024-1AD20 SIRIUS power contactor, size S0, 7.5 kW motor rating at 690 V AC-3. Current production. Screw terminals, DIN rail mount. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 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":"42 V","at 500 V rated value":"7.5 kW","at 60 Hz rated value":"42 V","at 690 V rated value":"7.5 kW","Instantaneous Contact":"0","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=295578&mlfb=3RT1024-1AD20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1024-1AD20/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of the 3RT1024-1AD20?","answer":"The depth is 91 mm, measured from the DIN rail mounting surface to the furthest projection of the contactor body."},{"question":"What conductor sizes does the 3RT1024-1AD20 accept for the main and auxiliary circuits?","answer":"Main circuit terminals accept 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or max 2x 10 mm² (fine-stranded). Auxiliary terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1024-1AD20","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/3RT1024-1AD20 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}}