{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1024-3AL20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1024-3AL20","canonicalUrl":"https://aoctrl.com/siemens/3RT1024-3AL20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1024-3AL20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S0 power contactor, 3RT1024-3AL20, screw-type main terminals, spring-loaded auxiliary terminals, 45 mm width, 5.5 kW at 400 V AC-3, 50/60 Hz coil.","salesMarkdown":"The Siemens 3RT1024-3AL20 is a SIRIUS S0 power contactor built for switching three-phase motors and resistive loads in control panels. Rated for AC-3 duty at 5.5 kW on 400 V (50/60 Hz), it also handles 7.5 kW at 500 V and 690 V — so it covers the common European 400 V three-phase motor range and steps up for 500/690 V applications. That's the difference between a contactor that lives a long life on a pump and one that gets swapped every six months on a reversing conveyor. ## Ingress and environment — what the IP ratings mean on the panel Finger-safe IP20 on the front face, but the terminal area is rated IP00 — bare live parts when the cover is off. That's typical for a panel-mounted contactor: the enclosure provides the overall IP rating, not the component.","metaTitle":"Siemens 3RT1024-3AL20 SIRIUS S0 Power Contactor, 5.5 kW at 4","metaDescription":"Siemens 3RT1024-3AL20 SIRIUS S0 power contactor, 5.5 kW at 400 V AC-3, 45 mm wide, screw terminals, spring-loaded aux. Active production. Quoted 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","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","Of The Terminal":"IP00","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Size Of Contactor":"S0","Solid Or Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²","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 400 V rated value":"5.5 kW","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":"0","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"5.5 kW","at AC-4 at 400 V rated value":"12.5 A","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 25 A","reference code acc. to IEC 81346-2":"Q","With Type Of Coordination 1 Required":"fuse gL/gG: 63 A","operational current at AC-12 maximum":"10 A","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","at ambient temperature 40 °C rated value":"40 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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","operational current at AC-15 at 230 V rated value":"6 A","operational current at AC-15 at 400 V rated value":"3 A","Inductive Power Factor With Closing Power Of The Coil":"0.72","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","type of connectable conductor cross-sections at AWG cables for auxiliary contacts":"2x (24 ... 14)","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=301321&mlfb=3RT1024-3AL20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1024-3AL20/alternatives.json"},"ai":{"faq":[{"question":"What are the motor ratings for 3RT1024-3AL20?","answer":"It is rated 5.5 kW at 400 V AC-3, 7.5 kW at 500 V, and 7.5 kW at 690 V. For AC-4 reversing duty, the operational current is 12.5 A at 400 V."},{"question":"Where can I buy 3RT1024-3AL20 and get a price?","answer":"We source this contactor to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time."},{"question":"Will 3RT1024-3AL20 drop into a panel specified for 3RT1023-1AL20?","answer":"Both are SIRIUS S0 contactors on the same 45 mm DIN-rail footprint with the same mounting standard (EN 50022). The 3RT1024-3AL20 carries higher AC-3 power ratings (5.5 kW vs the smaller frame's typical 4 kW at 400 V) and uses screw-type main terminals. Panel fit is identical, but verify the coil rating and auxiliary contact configuration match your control circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1024-3AL20","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/3RT1024-3AL20 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}}