{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AL24-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AL24-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AL24-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AL24-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1025-1AL24-ZW98, AC-3 7.5 kW/400 V contactor, AC 230V 50/60Hz coil, 3-pole, 2 NO + 2 NC auxiliary contacts, size S0, screw terminals, multiunit packing of 6.","salesMarkdown":"The Siemens 3RT1025-1AL24-ZW98 is a 3-pole contactor from the SIRIUS series, rated for AC-3 duty at 7.5 kW at 400 V with a 230 V AC coil. That AC-3 rating means it's designed for starting and stopping squirrel-cage motors — the most common motor load in industrial panels — and the 7.5 kW figure at 400 V covers a standard 10 HP motor at 480 V, with the 50/60 Hz coil making it line-voltage agnostic across common power grids. The size S0 frame keeps the panel footprint compact for this current class. ## What the auxiliary contact count means for your circuit The 2 NO + 2 NC auxiliary contacts are built into the contactor, not as a separate block. That's enough for a basic motor starter: one NO for the seal-in (holding contact), one NO for a run-status signal to the PLC, and the two NC contacts for feedback from the overload relay or a safety circuit. If your design needs more, you'll add a 3RT19 series auxiliary contact block on the side — the S0 frame accepts one. Snap-on DIN rail mounting to EN 60715, size S0. Screw terminals accept 1.5 to 6 mm² solid or stranded — strip length 10 mm, torque to 1.2 Nm. The multiunit packing of 6 means you get one part number for a batch build, which simplifies kitting for a panel shop running multiple starters.","metaTitle":"Siemens 3RT1025-1AL24-ZW98 Contactor, AC-3 7.5 kW/400 V, 3-P","metaDescription":"Siemens 3RT1025-1AL24-ZW98 contactor, AC-3 7.5 kW/400 V, 230V AC coil, 3-pole, 2 NO + 2 NC, size S0, screw terminals. Current lifecycle stage. Quoted to order.","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=241811&mlfb=3RT1025-1AL24-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AL24-ZW98/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 3RT1025-1AL24-ZW98?","answer":"Within the SIRIUS series, the standard 3RT1025-1AL24 (without the -ZW98 suffix) is the same contactor in single-unit packaging. The -ZW98 suffix indicates multiunit packing of 6; the electrical ratings, coil voltage, auxiliary contact configuration, and physical footprint are identical. For a direct BOM replacement, the 3RT1025-1AL24 is the one-for-one alternative — just verify the packaging quantity fits your inventory model."},{"question":"Where can I buy 3RT1025-1AL24-ZW98?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What compliance documentation does Siemens provide for 3RT1025-1AL24-ZW98?","answer":"Standard Siemens SIRIUS contactors carry CE marking for the European market and UL/CSA recognition for North America. RoHS and REACH declarations are part of the standard documentation package available from Siemens Industry Online Support."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AL24-ZW98","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/3RT1025-1AL24-ZW98 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}}