{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1024-1BB44-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1024-1BB44-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1024-1BB44-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1024-1BB44-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1024-1BB44-1AA0 power contactor, S0 frame, 24 V DC coil, screw-type terminals, AC-2 rated 5.5 kW at 400 V, IP20 front, 45 mm wide.","salesMarkdown":"Rated for AC-2 duty at 5.5 kW on 400 V three-phase, this contactor handles slip-ring motor loads where starting current is moderate. At 500 V and 690 V, the motor power rating holds at 7.5 kW, so the same unit can serve 400 V and 690 V installations without derating the load. The two built-in auxiliary contacts (instantaneous) are rated 10 A at 24 V DC, 6 A at 230 V AC, and 0.3 A at 220 V DC — sufficient for PLC feedback or status indication without an add-on block. For fault protection, type 2 coordination requires a gL/gG fuse of 25 A; type 1 coordination allows up to 63 A. The 45 mm width and 85 mm height fit standard S0 footprint panels. Side-by-side mounting is permitted with no derating at 6 mm spacing, which keeps the panel layout dense. Operating temperature range is -25 to +60 °C, with a maximum altitude of 2 000 m; pollution degree 3 means it tolerates conductive dust or humidity typical of industrial enclosures without conformal coating.","metaTitle":"Siemens SIRIUS 3RT1024-1BB44-1AA0 power contactor, S0, 24 VD","metaDescription":"Siemens SIRIUS 3RT1024-1BB44-1AA0 power contactor, S0 frame, 24 VDC coil, 5.4 W holding power, AC-2 5.5 kW at 400 V, screw terminals, IP20 front, current production. Sourced to ord","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"150 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":"24 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":"2","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=377630&mlfb=3RT1024-1BB44-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1024-1BB44-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings I need to verify for fit?","answer":"The AC-2 motor rating is 5.5 kW at 400 V, AC-4 current is 12.5 A at 400 V, and the AC-12 resistive load max is 10 A. The coil is 24 V DC at 5.4 W holding. These are the numbers that determine if it replaces an existing contactor in a motor circuit."},{"question":"What conductor sizes does the screw terminal accept?","answer":"Solid conductors: 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², max 2x 0.75 to 4 mm². Stranded: 2x 1 to 2.5 mm², 2x 2.5 to 6 mm², max 2x 10 mm². AWG equivalents are 2x 16-12, 2x 14-10, and 1x 8."},{"question":"What compliance documentation is available?","answer":"The part carries a reference code per DIN EN 81346-2 (Q for power circuit). Standard Siemens SIRIUS documentation includes RoHS and CE declarations; specific UL/CSA certifications are typically listed on the product label and in the technical data sheet. Verify with your Siemens channel for project-specific cert copies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1024-1BB44-1AA0","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/3RT1024-1BB44-1AA0 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}}