{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AL24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AL24","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AL24","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AL24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S0, 3RT1025-1AL24, 7.5 kW at 400 V AC-2, 15.5 A AC-4, screw terminals, IP20 front, 24 VDC coil.","salesMarkdown":"For reversing or plugging duty (AC-4), it carries 15.5 A at 400 V — that's the rating that governs frequent inching or reversing applications where the contacts break full motor current. Pollution degree 3 (conductive pollution) suits it for industrial environments where occasional condensation or light dust is present. Type 1 coordination requires a 63 A gL/gG fuse upstream; Type 2 coordination needs a 25 A gL/gG fuse. That distinction matters for selectivity: Type 2 leaves the contactor operational after a short-circuit, while Type 1 allows the contactor to be damaged but clears the fault. Pick your fuse per the coordination class your panel design specifies. IP20 on the front protects against finger contact; IP00 at the terminals means the connection area must be inside a closed enclosure. The screw-type terminals on both main and auxiliary circuits accept solid or stranded copper: main terminals take 2x (1 to 2.5 mm²) or up to 2x 10 mm² max, auxiliary terminals take 2x (0.5 to 1.5 mm²) or up to 2x 4 mm² max. That covers most panel wiring from 16 AWG down to 8 AWG for the mains. Substance prohibition per RoHS applies from 01.07.2006. Verify UL/CSA certification for your jurisdiction at quote. The 45 mm width and 85 mm height fit the S0 footprint. Depth is 140 mm. Side-by-side mounting is permitted. Coil ratings at other voltages: 2 A at 60 VDC, 1 A at 110 VDC, 0.3 A at 220 VDC, 6 A at 230 VAC, 3 A at 400 VAC. The coil operates on 50 Hz or 60 Hz with a tolerance band of 0.8 to 1.1 times nominal at 50 Hz and 0.85 to 1.1 at 60 Hz. That means the coil pulls in reliably even if the control supply sags to 80% of nominal at 50 Hz.","metaTitle":"Siemens 3RT1025-1AL24 SIRIUS Power Contactor, 7.5 kW AC-2","metaDescription":"Siemens 3RT1025-1AL24 SIRIUS power contactor, Size S0, 7.5 kW at 400 V AC-2, 15.5 A AC-4. Screw terminals, IP20 front. Active production, sourced to order. Request 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","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","Of The Terminal":"IP00","lifecycle_stage":"current","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Size Of Contactor":"S0","Solid Or Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²","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":"230 V","at 500 V rated value":"10 kW","at 60 Hz rated value":"230 V","at 690 V rated value":"11 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"7.5 kW","at AC-4 at 400 V rated value":"15.5 A","Substance Prohibitance (Date)":"01.07.2006 00:00:00","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 25 A","reference code acc. to IEC 81346-2":"Q","Ambient Temperature During Operation":"-25 ... +60 °C","With Type Of Coordination 1 Required":"fuse gL/gG: 63 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","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","Required Spacing For Grounded Parts At The Side":"6 mm","Inductive Power Factor With Closing Power Of The Coil":"0.72","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","Of The Contactor With Added Electronically Optimized 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=354270&mlfb=3RT1025-1AL24","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AL24/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AL24","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 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}}