{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AG20-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AG20-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AG20-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AG20-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3RT1025-1AG20-ZX95, 7.5 kW AC-2 at 400 V, screw-type terminals, 45 mm width, snap-on DIN-rail mounting.","salesMarkdown":"## Part identification and lifecycle status The envelope dimensions are 45 mm width, 85 mm height, and 91 mm depth, fitting the S0 footprint. ## Motor switching ratings and coordination The AC-4 rating (inching/plugging duty) at 400 V is 15.5 A. These are the load-bearing figures for motor switching applications; the AC-12 maximum operating current of 10 A covers resistive loads. Type 1 coordination (allowable contactor destruction) permits a 63 A gL/gG fuse. For audit purposes, the coordination type must be specified in the panel design documentation. ## Termination and environmental limits Main current circuit terminals are screw-type, accepting solid conductors of 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²). Stranded conductors accept 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), and max 2x 10 mm². AWG equivalents for main contacts are 2x (16 to 12), 2x (14 to 10), and 1x 8. Operating temperature range during operation is -25 to +60 °C. Degree of pollution is 3 (conductive pollution, typical for industrial control panels). Front protection is IP20; terminal protection is IP00, meaning the terminals require enclosure within the panel. ## Coil operating range and auxiliary contact ratings The coil operating range at 50 Hz is 0.8 to 1.1 times rated voltage; at 60 Hz it is 0.85 to 1.1 times rated voltage. Auxiliary contact ratings at 24 V are 10 A, at 60 V are 2 A, at 110 V are 1 A, at 220 V are 0.3 A, at 230 V are 6 A, and at 400 V are 3 A. The contactor has zero instantaneous auxiliary contacts. Mechanical service life is typically 10,000,000 operating cycles.","metaTitle":"Siemens SIRIUS 3RT1025-1AG20-ZX95 Power Contactor, S0, 7.5 k","metaDescription":"Siemens SIRIUS 3RT1025-1AG20-ZX95 power contactor, size S0, 7.5 kW AC-2 at 400 V. Screw terminals, DIN-rail mount. Current lifecycle stage. Sourced to order against RFQ.","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 60 Hz":"0.85 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 Hz","2 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 50 Hz rated value":"110 V","at 500 V rated value":"10 kW","at 60 Hz rated value":"110 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":"8.4 V·A","Apparent pick-up power of magnet coil at AC":"64 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.72","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=198332&mlfb=3RT1025-1AG20-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AG20-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this contactor?","answer":"The contactor is rated at 7.5 kW for AC-2 duty at 400 V, and 15.5 A for AC-4 duty at 400 V. These are the primary ratings for motor switching applications."},{"question":"What is the physical size and mounting method?","answer":"The contactor is size S0 with dimensions 45 mm width, 85 mm height, and 91 mm depth. It mounts via screw and snap-on onto a 35 mm DIN rail per DIN EN 50022."},{"question":"What fuse coordination is required?","answer":"For Type 2 coordination, a gL/gG fuse rated at 25 A is required. For Type 1 coordination, a 63 A gL/gG fuse is permitted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AG20-ZX95","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/3RT1025-1AG20-ZX95 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}}