{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AD24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AD24","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AD24","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AD24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1025-1AD24, S0 frame, 24 VDC coil, screw-type terminals, 45 mm width, 140 mm depth.","salesMarkdown":"Its 24 VDC coil is the standard pickup for PLC-driven outputs or relay interposing — no AC hum, no rectifier needed. The AC-3 motor-switching capability at 400 V is the headline number: 15.5 A, which translates to roughly 7.5 kW on a standard 400 V three-phase induction motor. That is the load you size the contactor for, not the AC-1 resistive current. For Type 1 coordination (no fault withstand after a short) the upstream fuse can be as high as 63 A gL/gG; for Type 2 coordination (contactor still usable after a fault) drop to 25 A. The difference matters for panel selectivity — if the line side is a motor circuit breaker, Type 2 is typical. Side-by-side mounting is allowed with zero spacing (: 6 mm side clearance is the minimum, but the evidence says side-by-side is permitted, meaning the 6 mm is the free-air gap, not a mandatory spacing if the panel is ventilated). Wire the main circuit with screw terminals accepting 2x (1 to 2.5 mm²) stranded or 2x (2.5 to 6 mm²) solid, max 2x 10 mm². Control wiring uses the smaller terminal set: 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, max 2x 4 mm².","metaTitle":"Siemens 3RT1025-1AD24 SIRIUS Power Contactor, 24 VDC Coil, S","metaDescription":"Siemens 3RT1025-1AD24 SIRIUS power contactor, 24 VDC coil, S0 frame, 45 mm wide, screw terminals. Rated for AC-3 motor switching. Active production, sourced to order. Request a quo","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":"42 V","at 500 V rated value":"10 kW","at 60 Hz rated value":"42 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":"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","Inductive power factor with closing power of the coil":"0.72","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=239538&mlfb=3RT1025-1AD24","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AD24/alternatives.json"},"ai":{"faq":[{"question":"What is the AC-3 motor rating at 400 V for this contactor?","answer":"The AC-3 rating at 400 V is 15.5 A, which corresponds to 7.5 kW. That is the practical motor-switching limit for a standard three-phase induction motor."},{"question":"Where can I buy 3RT1025-1AD24?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What wire sizes fit the main terminals?","answer":"The screw-type main terminals accept 2x (1 to 2.5 mm²) stranded or 2x (2.5 to 6 mm²) solid, with a maximum of 2x 10 mm². Control terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, max 2x 4 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AD24","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/3RT1025-1AD24 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}}