{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AG24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AG24","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AG24","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AG24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS Size S0 power contactor, 3RT1025-1AG24, 24 VDC coil, screw terminals, 15.5 A AC-4 at 400 V, DIN rail mount.","salesMarkdown":"Rated for AC-4 duty at 15.5 A at 400 V, this contactor handles the high inrush of reversing or plugging motor applications where the contacts break under full load. For AC-2 at 400 V it carries 7.5 kW, covering slip-ring motor switching. The screw terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, with a maximum of 2x 4 mm², matching typical control wiring practices. For standard AC-3 motor starts, the 500 V rating of 10 kW and 690 V rating of 11 kW cover most European 3-phase motor sizes up to 11 kW. Type 2 coordination requires a 25 A gL/gG fuse upstream (type 1 allows 63 A). This matters for selectivity studies — if your panel demands Type 2 coordination to minimize downtime after a fault, the 25 A fuse limit is the binding constraint. The 2000 m maximum altitude limit is standard for low-voltage gear; derate above that. At 85 mm height and 140 mm depth, the S0 frame fits shallow enclosures. The screw terminals for the main circuit accept AWG 16 to 8, with two conductors per terminal allowed — useful for daisy-chaining power feeds. The 2 instantaneous auxiliary contacts (standard configuration) can be wired for status feedback or interlocking without an add-on block.","metaTitle":"Siemens 3RT1025-1AG24 SIRIUS Power Contactor, S0, 24 VDC, 15","metaDescription":"Siemens SIRIUS 3RT1025-1AG24 power contactor, Size S0, 24 VDC coil, 15.5 A AC-4 at 400 V, screw terminals, DIN rail mount, current production.","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":"110 V","at 500 V rated value":"10 kW","at 60 Hz rated value":"110 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=197007&mlfb=3RT1025-1AG24","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AG24/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative if I cannot get the 3RT1025-1AG24?","answer":"The 3RT1017-1AP01 is a smaller S0 frame contactor with a 24 VDC coil, but it is rated for lower motor power (5.5 kW at 400 V AC-3 vs 10 kW for the 3RT1025-1AG24). It will not directly replace the 3RT1025-1AG24 without checking the load current — the 3RT1025-1AG24 carries a higher AC-3 rating."},{"question":"What wire sizes does the 3RT1025-1AG24 accept?","answer":"Main circuit screw terminals accept 2x (0.5 to 1.5 mm²) solid, 2x (0.75 to 2.5 mm²) stranded, or up to 2x 4 mm². AWG equivalents are 2x (16 to 12) solid, 2x (14 to 10) stranded, or 1x 8."},{"question":"Will the 3RT1025-1AG24 fit a panel designed for the 3RT1017-1AP01?","answer":"Both are S0 frame size with identical 45 mm width and DIN rail mounting, so the mechanical footprint is the same. However, the 3RT1025-1AG24 draws higher coil current (10 A vs lower on the 3RT1017-1AP01) and requires a 25 A Type 2 coordination fuse — verify the upstream protection and power supply before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AG24","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/3RT1025-1AG24 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}}