{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AF04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AF04","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AF04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AF04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3 NO main contacts, 7.5 kW at 400 V AC-2, screw terminals, 45 mm width, 140 mm depth.","salesMarkdown":"For AC-4 reversing or plugging duty at 400 V, the operating current is 15.5 A. The 690 V rating reaches 11 kW, and at 500 V it delivers 10 kW. The 45 mm width and 140 mm depth fit into the S0 frame footprint, leaving room alongside for auxiliary contact blocks or overload relays in the same DIN-rail row. Main contact screw terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²). For stranded or multi-stranded wire, the range is 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or max 2x 10 mm². AWG equivalents for the main contacts are 2x (16 to 12), 2x (14 to 10), or 1x 8. For type 2 coordination, the required fuse is gL/gG 25 A; for type 1 coordination, gL/gG 63 A. This determines the short-circuit protection upstream. The front of the terminal has IP20 protection; the terminal itself is IP00. Side-by-side mounting is allowed with a 6 mm gap to the side. The coil operates at 50 Hz with a voltage range of 0.8 to 1.1 times the rated value.","metaTitle":"Siemens 3RT1025-1AF04 SIRIUS Power Contactor, 3 NO, 7.5 kW A","metaDescription":"Siemens 3RT1025-1AF04 SIRIUS power contactor, size S0, 3 NO main contacts, rated 7.5 kW at 400 V AC-2. Screw terminals, DIN rail mount. Current lifecycle stage. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"140 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 50 Hz":"0.8 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 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":"110 V","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","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","Apparent holding power of magnet coil at AC":"7.8 V·A","Apparent pick-up power of magnet coil at AC":"61 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.82","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=8652&mlfb=3RT1025-1AF04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AF04/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RT1025-1AF04?","answer":"The depth is 140 mm, with a width of 45 mm and height of 85 mm."},{"question":"What wire sizes does 3RT1025-1AF04 accept for solid conductors?","answer":"Solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²). Stranded: 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or max 2x 10 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AF04","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/3RT1025-1AF04 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}}