{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1024-3AN20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1024-3AN20","canonicalUrl":"https://aoctrl.com/siemens/3RT1024-3AN20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1024-3AN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S0 frame, 3RT1024-3AN20, screw-type terminals, 5.5 kW at 400 V AC-2, 12.5 A AC-4, 45 mm wide, DIN rail snap-on mounting.","salesMarkdown":"## SIRIUS S0 power contactor — 3RT1024-3AN20 For AC-4 reversing or inching duty, the maximum operating current is 12.5 A at 400 V, which governs the real thermal stress on the contacts during plugging or jogging cycles. The main circuit uses screw-type terminals accepting 2x (0.25 to 2.5 mm²) solid or stranded, up to 2x 10 mm² max. The built-in auxiliary contact block carries 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — these are the AC-12 resistive load ratings for pilot duty. For DC switching, the contact handles 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V. That DC curve drops fast with voltage because DC arcs sustain longer; at 220 V the contact is limited to 0.3 A, so verify your DC solenoid or indicator load doesn't exceed that. The 90 mm depth fits standard 100 mm deep enclosures, leaving 10 mm for wiring bend radius behind the contactor.","metaTitle":"Siemens 3RT1024-3AN20 SIRIUS Power Contactor, S0, 5.5 kW AC-","metaDescription":"Siemens 3RT1024-3AN20 SIRIUS power contactor, S0 frame, 5.5 kW at 400 V AC-2, 12.5 A AC-4, screw terminals, 45 mm wide, DIN rail mount. Current lifecycle stage. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"90 mm","Solid":"2x (0.25 ... 2.5 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":"220 V","at 500 V rated value":"7.5 kW","at 60 Hz rated value":"220 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 (0.25 ... 1.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"spring-loaded 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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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=301824&mlfb=3RT1024-3AN20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1024-3AN20/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT1024-3AN20 drop into a panel specified around 3RT1023-1AL20 without rewiring?","answer":"Both are SIRIUS S0 frame contactors with the same 45 mm width and DIN rail mounting, so the mechanical footprint is identical. The 3RT1024-3AN20 carries higher AC-2 power ratings (5.5 kW vs the 3RT1023-1AL20's lower rating), so it can replace the smaller unit without rewiring as long as the coil voltage and auxiliary contact configuration match. Verify the coil rating on your specific variant before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1024-3AN20","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/3RT1024-3AN20 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}}