{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AT60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AT60","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AT60","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AT60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1025-1AT60 power contactor, size S0, 3 NO main contacts, screw-type terminals, 7.5 kW at AC-2 400 V, 45 mm width.","salesMarkdown":"The 45 mm width and 91 mm depth are the dimensions that govern panel layout — the depth in particular matters when fitting into shallow enclosures or behind gland plates. The headline motor ratings: 7.5 kW at AC-2 duty class at 400 V, and 15.5 A at AC-4 at 400 V. AC-2 is the standard for slip-ring motor starting and reversing — the rating that governs the real-world load it can handle in those applications. AC-4 covers plugging and inching duty, where the contactor sees higher switching stress. For short-circuit protection, the contactor is coordinated with fuses. With type of coordination 2 (no damage to the contactor after a fault), the required fuse is gL/gG 25 A. This is the selectivity headroom a site electrical engineer needs to size the upstream protection without over-fusing and losing coordination. Main circuit terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²). For stranded conductors: 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), and max 2x 10 mm². AWG equivalents are 2x (16 to 12), 2x (14 to 10), and 1x 8. The screw-type terminals are standard for panel builders — no special tooling needed, but torque to the manufacturer's spec during commissioning.","metaTitle":"Siemens 3RT1025-1AT60 SIRIUS Power Contactor, S0, 3 NO, 7.5","metaDescription":"Siemens SIRIUS 3RT1025-1AT60 power contactor, size S0, 3 NO main contacts, 7.5 kW at AC-2 400 V, screw terminals, active 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 60 Hz":"0.8 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"60 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 500 V rated value":"10 kW","at 60 Hz rated value":"600 V","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":"7.5 V·A","Apparent pick-up power of magnet coil at AC":"69 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.76","Inductive power factor with the holding power of the coil":"0.28","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=398122&mlfb=3RT1025-1AT60","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AT60/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this contactor?","answer":"At AC-2 duty at 400 V, it is rated for 7.5 kW. At AC-4 at 400 V, the rated operating current is 15.5 A. For resistive loads (AC-12), the maximum operating current is 10 A."},{"question":"What are the mounting dimensions?","answer":"The contactor is 45 mm wide, 85 mm tall, and 91 mm deep. It mounts on a 35 mm DIN rail per DIN EN 50022, using either screw or snap-on mounting."},{"question":"What short-circuit protection does it require?","answer":"For type 2 coordination (no damage), use a gL/gG fuse rated at 25 A. For type 1 coordination (contactor may be damaged), use a gL/gG fuse up to 63 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AT60","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/3RT1025-1AT60 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}}