{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1024-3AL28-1MA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1024-3AL28-1MA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1024-3AL28-1MA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1024-3AL28-1MA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1024-3AL28-1MA2, S0 frame, 45 mm width, screw-type terminals, snap-on DIN rail mount, active production.","salesMarkdown":"## Siemens SIRIUS 3RT1024-3AL28-1MA2 — Power Contactor, S0 Frame Rated for AC-2 duty at 400 V at 5.5 kW and AC-4 at 400 V at 12.5 A, this contactor handles reversing or plugging applications where the motor sees frequent starts and stops — AC-4 is the tougher duty cycle, so that 12.5 A figure is the one to watch for high-cycle loads like conveyors or hoists. Main circuit terminals are screw-type, accepting 2x (1…2.5 mm²) solid or stranded, 2x (2.5…6 mm²), or up to 2x 10 mm². AWG equivalents: 2x (16…12), 2x (14…10), or 1x 8. The front has IP20 finger-safe protection; the terminal area itself is IP00, so panel builders should guard against accidental contact inside the enclosure. Depth of 140 mm means it fits most standard 200 mm deep enclosures, but check gland-plate clearance if the panel is shallow or has a rear-mounted busbar system. Type 1 coordination (contactor may need replacement after fault) allows a 63 A gL/gG fuse. This matters for selectivity studies — if the panel demands Type 2, the 25 A limit governs the branch circuit design. Degree of pollution 3 means the contactor is rated for conductive pollution environments typical of industrial control panels — no special conformal coating needed for normal factory air.","metaTitle":"Siemens 3RT1024-3AL28-1MA2 SIRIUS Power Contactor, S0, 45mm","metaDescription":"Siemens SIRIUS 3RT1024-3AL28-1MA2 power contactor, S0 frame, 45 mm width, screw terminals, snap-on DIN rail mount. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"140 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":"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":"3","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=267110&mlfb=3RT1024-3AL28-1MA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1024-3AL28-1MA2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1024-3AL28-1MA2?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What are the key ratings for 3RT1024-3AL28-1MA2?","answer":"AC-2 at 400 V: 5.5 kW. AC-4 at 400 V: 12.5 A. Operating temperature: -25 to +60 °C. Mounts on 35 mm DIN rail per EN 50022. Screw terminals accept up to 2x 10 mm². Pollution degree 3."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1024-3AL28-1MA2","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/3RT1024-3AL28-1MA2 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}}