{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AR64","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AR64","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AR64","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AR64","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S0 power contactor, 3RT1025-1AR64, 15.5 A AC-4 at 400 V, 24 VDC coil, screw-type terminals, 45 mm wide, snap-on DIN rail mount.","salesMarkdown":"It's rated for 15.5 A in AC-4 duty at 400 V — that's the category for reversing, plugging, and inching motors where the contacts make and break under full locked-rotor current. The 24 VDC coil holds in at 18 V and drops out below that, so it plays nice with standard 24 VDC control supplies. Side-by-side mounting is allowed with a 6 mm gap at the side for heat dissipation. The screw terminals accept up to 2x 4 mm² solid or 2x 10 mm² stranded on the main circuit — that's enough for the 7.5 kW motor load at AC-2 or the 11 kW at 690 V. The front is IP20, the terminals themselves are IP00, so it's a panel-mount part, not a standalone enclosure device. It'll live inside a cabinet with the rest of the SIRIUS gear. For type 1 coordination (contactor can be damaged but no fire or shock hazard), you can go up to a 63 A gL/gG. That's the factory recommendation — don't guess it; the fuse size is part of the contactor's short-circuit rating.","metaTitle":"Siemens SIRIUS 3RT1025-1AR64 Power Contactor, S0, 15.5A AC-4","metaDescription":"Siemens SIRIUS 3RT1025-1AR64 S0 power contactor, 15.5A AC-4 at 400V, 24VDC coil, screw terminals, DIN rail mount. Current production. Sourced to order against RFQ.","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 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":"400 V","at 500 V rated value":"10 kW","at 60 Hz rated value":"400 ... 440 V","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":"7.5 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=120054&mlfb=3RT1025-1AR64","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AR64/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1025-1AR64 and how do I get a price?","answer":"We source the 3RT1025-1AR64 to order against an RFQ. Availability and current pricing are confirmed at quote time — submit a request and we'll get you a firm price and lead time."},{"question":"What is 3RT1025-1AR64's listed depth?","answer":"The depth is 140 mm. That's the dimension from the mounting surface to the front of the contactor, including the coil terminals."},{"question":"What wire sizes does the 3RT1025-1AR64 accept on the main terminals?","answer":"The screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and up to 2x (0.75 to 4 mm²) solid or stranded. For the main circuit, you can also land 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or max 2x 10 mm² stranded."},{"question":"What compliance documentation does Siemens provide for 3RT1025-1AR64?","answer":"As a SIRIUS series product from Siemens, this contactor carries CE marking for the European market. Specific RoHS, REACH, and UL documentation is available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AR64","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/3RT1025-1AR64 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}}