{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1BE44-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1BE44-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1BE44-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1BE44-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, Size S0, 3RT1025-1BE44-1AA0, 11 kW at 690 V AC-3, 15.5 A AC-4, screw terminals, IP20 front, 45 x 85 x 150 mm.","salesMarkdown":"## SIRIUS S0 power contactor — 11 kW at 690 V, screw terminals The Siemens SIRIUS 3RT1025-1BE44-1AA0 is a Size S0 power contactor rated for motor switching up to 11 kW at 690 V AC-3 and 10 kW at 500 V AC-3 — the AC-3 figure governs the real motor load, not the AC-1 resistive rating. In AC-4 reversing or plugging duty it handles 15.5 A at 400 V, so it suits frequent inching or jogging applications where the contactor sees high electrical wear. The coil draws 5.4 W DC for both closing and holding, which means the control transformer can be sized for a steady load — no inrush spike beyond the sealed power. Side-by-side mounting is permitted — no gap needed between contactors — which simplifies panel layout when stacking multiple units for multi-motor groups. Main current circuit uses screw-type terminals accepting 2x (1–2.5 mm²) solid, 2x (2.5–6 mm²) stranded, or max 2x 10 mm² — enough for the rated motor currents without piggyback lugs. The auxiliary contact terminal accepts 2x (0.5–1.5 mm²) solid, 2x (0.75–2.5 mm²) stranded, max 2x 4 mm². AWG equivalents for the main contacts are 2x (16–12), 2x (14–10), 1x 8. This lets the panel designer choose between tighter protection or higher fault-clearing capacity depending on the motor branch.","metaTitle":"Siemens 3RT1025-1BE44-1AA0 SIRIUS Power Contactor, 11 kW at","metaDescription":"Siemens SIRIUS 3RT1025-1BE44-1AA0 power contactor, Size S0, 11 kW at 690 V AC-3, 15.5 A AC-4, screw terminals, IP20 front, current lifecycle. Available to order — request quote.","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":"60 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":"10 kW","at 690 V rated value":"11 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":"7.5 kW","at AC-4 at 400 V rated value":"15.5 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=103807&mlfb=3RT1025-1BE44-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1BE44-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this contactor?","answer":"It switches 11 kW at 690 V AC-3, 10 kW at 500 V AC-3, and 7.5 kW at 400 V AC-2. In AC-4 duty the maximum operating current is 15.5 A at 400 V."},{"question":"What is the depth of the 3RT1025-1BE44-1AA0?","answer":"The depth is 150 mm, width 45 mm, height 85 mm — fits standard S0 contactor footprint."},{"question":"Does this contactor require side clearance for mounting?","answer":"No — side-by-side mounting is permitted without a gap, so multiple units can be packed tightly on the DIN rail."},{"question":"Where can I buy the 3RT1025-1BE44-1AA0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no fixed stock or price on the listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1BE44-1AA0","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/3RT1025-1BE44-1AA0 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}}