{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1024-1BG40-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1024-1BG40-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1024-1BG40-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1024-1BG40-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1024-1BG40-1AA0 power contactor, S0 frame, 10 A AC-12 maximum operating current, 5.5 kW at AC-2 400 V, screw-type terminals, 45 mm width.","salesMarkdown":"## What this SIRIUS S0 contactor carries For motor loads, it's specced at 5.5 kW in AC-2 at 400 V (slip-ring motors, wound-rotor applications) and 12.5 A in AC-4 at 400 V (plugging, inching, reversing duty). The holding and closing power of the DC magnet coil is a steady 5.4 W, which keeps the control transformer sizing simple. ## Panel fit and wiring reality Main circuit terminals are screw-type, accepting 2x (0.75... 4 mm²) solid or 2x (1... 2.5 mm²) stranded, with a max of 2x 10 mm². Front face carries IP20 protection — safe for finger contact in an open panel; the terminal area itself is IP00, so live parts are exposed until the gland plate is on. For Type 1 coordination (welding allowed, but no fire risk), it's gL/gG 63 A.","metaTitle":"Siemens SIRIUS 3RT1024-1BG40-1AA0 Power Contactor, S0 Frame,","metaDescription":"Siemens SIRIUS 3RT1024-1BG40-1AA0 power contactor, S0 frame, 10 A AC-12 max, 5.5 kW at AC-2 400 V. Active production, screw terminals, 45 mm width. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"101 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 The Side":"6 mm","Rated Value":"125 V","On The Front":"IP20","Initial Value":"0.8","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","Full-scale value":"1.1","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 500 V rated value":"7.5 kW","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","Closing power of magnet coil at DC":"5.4 W","Holding power of magnet coil at DC":"5.4 W","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","Type of voltage of the control supply voltage":"DC","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=513732&mlfb=3RT1024-1BG40-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1024-1BG40-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source — 3RT1015-1BB42?","answer":"The 3RT1015-1BB42 is a smaller S00 frame contactor with lower ratings (typically 7 A AC-3 vs this S0's 10 A AC-12). It will not drop into the same panel without rewiring — the footprint, terminal spacing, and coil voltage are different. The 3RT1024-1BG40-1AA0 is the correct S0 frame for 5.5 kW motor loads at 400 V."},{"question":"What is the listed depth of this contactor?","answer":"The depth is 101 mm, with a width of 45 mm and height of 85 mm — standard S0 frame dimensions for DIN rail mounting."},{"question":"What wire sizes does the main circuit accept?","answer":"Screw-type terminals accept 2x (0.5... 1.5 mm²) solid, 2x (0.75... 2.5 mm²) solid, max 2x (0.75... 4 mm²) solid; for stranded, 2x (1... 2.5 mm²) and 2x (2.5... 6 mm²), max 2x 10 mm². AWG equivalents are 2x (16... 12) and 2x (14... 10), with 1x 8 max."},{"question":"What compliance documentation is available?","answer":"The part carries IEC ratings (pollution degree 3, altitude 2 000 m, operating temp -25 to +60 °C) and is designed to DIN EN 50022 mounting rail standards. Specific RoHS/REACH/UL documentation should be requested with the RFQ, as the evidence does not list those certifications directly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1024-1BG40-1AA0","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/3RT1024-1BG40-1AA0 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}}