{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AL00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AL00","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AL00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AL00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3RT1025-1AL00, 24 VDC coil, 3-pole, screw terminals, 45 mm wide, snap-on DIN rail mounting, rated 10 kW at 500 V, 11 kW at 690 V.","salesMarkdown":"Rated motor power is 10 kW at 500 V and 11 kW at 690 V; for AC-4 duty at 400 V it carries 15.5 A, making it suited for reversing or inching applications where the contactor sees frequent switching under load. The auxiliary contact block handles 10 A at 24 V (AC-12), and the coil holds at 24 VDC nominal with a rated frequency of 50 Hz. ## DIN-rail footprint and wiring At 45 mm wide, 85 mm tall, and 91 mm deep, the S0 frame leaves room for side-by-side mounting (permitted by the manufacturer) without derating, provided the ambient stays within -25 to +60 °C during operation. Main-circuit terminals accept 2x (1 to 2.5 mm²) stranded or 2x (2.5 to 6 mm²) solid, up to 2x 10 mm² max. Auxiliary terminals handle 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²), max 2x 4 mm² — typical for control wiring in a panel. IP20 on the front, IP00 at the terminals — the contactor is protected against finger contact on the front face but requires the panel enclosure to shield the wiring zone.","metaTitle":"3RT1025-1AL00 SIRIUS Power Contactor, S0, 24 VDC, 10 kW at 5","metaDescription":"Siemens SIRIUS 3RT1025-1AL00 power contactor, S0 size, 24 VDC coil, rated 10 kW at 500 V / 11 kW at 690 V. Screw terminals, snap-on DIN rail. Current production. Available 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":"125 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=389061&mlfb=3RT1025-1AL00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AL00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1025-1AL00 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a quote request; availability and pricing are confirmed at quote time."},{"question":"Will 3RT1025-1AL00 drop into a panel specified around 3RT1023-1AL20 without rewiring?","answer":"Both are S0-frame SIRIUS contactors with the same 45 mm width and DIN-rail mounting, so the mechanical fit is identical. The key difference is the coil voltage — 3RT1025-1AL00 uses 24 VDC; verify the control circuit voltage before swapping."},{"question":"What is the depth of 3RT1025-1AL00?","answer":"The depth is 91 mm."},{"question":"What solid wire sizes does the auxiliary terminal accept?","answer":"The auxiliary terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²) solid or stranded."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AL00","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/3RT1025-1AL00 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}}