{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AL25","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AL25","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AL25","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AL25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1025-1AL25 contactor, AC-3 7.5 kW/400 V, AC 230 V 50/60 Hz coil, 3-pole, 1 NO + 1 NC auxiliary contacts, Size S0, screw connection.","salesMarkdown":"## Motor switching for the panel line The Siemens 3RT1025-1AL25 is a Size S0 contactor from the SIRIUS family, rated for AC-3 duty at 7.5 kW at 400 V. That AC-3 rating means it's built for switching three-phase induction motors — the 7.5 kW figure covers common pump, fan, and conveyor motors up to that load. The 230 V AC coil at 50/60 Hz is standard for European control circuits; verify your control transformer taps before wiring. Three main poles handle the motor circuit, and the built-in 1 NO + 1 NC auxiliary contact block gives you one feedback signal and one interlock without adding a separate module. Screw terminals on Size S0 make it a direct swap into existing panels where spring-cage hasn't been adopted yet. ## DIN-rail integration note The screw terminals accept up to 4 mm² stranded or 6 mm² solid — torque to 1.2 Nm for the power terminals, 0.8 Nm for the auxiliaries. Leave a 10 mm gap above and below for air circulation if the panel is enclosed.","metaTitle":"Siemens 3RT1025-1AL25 Contactor, AC-3 7.5 kW, 230V Coil","metaDescription":"Siemens 3RT1025-1AL25 contactor, AC-3 7.5 kW/400 V, 230 V AC coil, 3-pole, Size S0, screw terminals. Lifecycle current. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current"}},"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=79058&mlfb=3RT1025-1AL25","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AL25/alternatives.json"},"ai":{"faq":[{"question":"What coil voltage does the 3RT1025-1AL25 use?","answer":"The coil is rated for 230 V AC at 50/60 Hz, typical for European control circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AL25","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/3RT1025-1AL25 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}}