{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AH00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AH00","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AH00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AH00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1025-1AH00 power contactor, size S0, 3 NO main contacts, screw-type terminals, 45 mm width, 85 mm height, 91 mm depth.","salesMarkdown":"The 45 mm width and 85 mm height mean it fits alongside other S0 devices in a multi-row layout. For motor switching, this contactor handles 10 kW at 500 V and 11 kW at 690 V, which covers common three-phase induction motor sizes in those voltage classes. The main circuit terminals accept solid or stranded 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 larger wiring, the same terminals handle 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or a single 10 mm² conductor. In AWG, that's 2x (16 to 12), 2x (14 to 10), or 1x 8 AWG. The side-by-side mounting clearance is 6 mm, and the front face is IP20 rated while the terminals themselves are IP00. ## Control circuit ratings The coil operates at 50 Hz, with a voltage tolerance of 0.8 to 1.1 times the rated value. The rated control supply voltage at 50 Hz is 48 V. For auxiliary contact switching, the rated currents vary by voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V.","metaTitle":"Siemens 3RT1025-1AH00 SIRIUS Power Contactor, S0, 3 NO, Scre","metaDescription":"Siemens SIRIUS 3RT1025-1AH00 power contactor, size S0, 3 NO main contacts, screw terminals, rated for 10 kW at 500 V and 11 kW at 690 V. Current production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 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":"48 V","at 500 V rated value":"10 kW","at 690 V rated value":"11 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":"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=74237&mlfb=3RT1025-1AH00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AH00/alternatives.json"},"ai":{"faq":[{"question":"What are the main contact ratings for this contactor?","answer":"It has three normally-open main contacts. For motor loads, it's rated for 10 kW at 500 V and 11 kW at 690 V. For reversing or plugging duty (AC-4), it's rated at 15.5 A at 400 V."},{"question":"What wire sizes does the screw terminal accept?","answer":"The main circuit terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) solid or stranded. For larger conductors, 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or a single 10 mm². In AWG, that's 2x (16 to 12), 2x (14 to 10), or 1x 8 AWG."},{"question":"How does this compare to the 3RT1017-1AP01?","answer":"The 3RT1017-1AP01 is a smaller frame size (S00 vs S0) with a lower current rating. The 3RT1025-1AH00 handles higher motor loads — 10 kW at 500 V versus the S00's typical 5.5 kW at 400 V — and has a wider terminal capacity. The mounting footprint is different: S0 is 45 mm wide versus S00 at 45 mm as well, but the height and depth differ, so a direct drop-in without checking dimensions isn't guaranteed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AH00","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/3RT1025-1AH00 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}}