{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AP08-0QA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AP08-0QA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AP08-0QA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AP08-0QA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S0 power contactor, 3RT1025-1AP08-0QA2, 3 NO main contacts, screw-type terminals, 55 mm width, 140 mm depth, IP20 front, screw and snap-on mounting onto 35 mm DIN rail.","salesMarkdown":"The 3RT1025-1AP08-0QA2: The AC-2 rating at 400 V is 7.5 kW — that's the duty for slip-ring motors or moderate loads. For direct-on-line starting, the AC-3 capability shows through the 500 V / 10 kW and 690 V / 11 kW ratings. The 690 V figure is worth noting: it means this S0 frame handles 690 V line supplies common in European industrial networks without stepping up to a larger frame. Type 2 coordination (contactor remains operational after a fault) requires a 25 A gL/gG fuse. If you're designing to IEC 60947-4-1, the 25 A fuse is the one that keeps the contactor in service after a short circuit. Side-by-side mounting is permitted with 6 mm spacing at the side — no derating needed for adjacent units if that gap is maintained.","metaTitle":"Siemens 3RT1025-1AP08-0QA2 SIRIUS S0 Power Contactor, 3-pole","metaDescription":"Siemens 3RT1025-1AP08-0QA2 SIRIUS S0 power contactor, 3 NO main contacts, 55mm width, screw terminals, 140mm depth, active production. Motor ratings to 11 kW at 690 V. Quoted to or","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":"55 mm","Height":"85 mm","Maximum":"2 000 m","at 50 Hz":"0.8 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 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":"230 V","at 500 V rated value":"10 kW","at 690 V rated value":"11 kW","Instantaneous Contact":"3","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":"7.8 V·A","Apparent pick-up power of magnet coil at AC":"61 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.82","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=101279&mlfb=3RT1025-1AP08-0QA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AP08-0QA2/alternatives.json"},"ai":{"faq":[{"question":"What are the main contact ratings for this contactor?","answer":"Three normally-open main contacts. Motor ratings: 7.5 kW at 400 V AC-2, 15.5 A at 400 V AC-4, 10 kW at 500 V, and 11 kW at 690 V. The 690 V rating means it handles 690 V line supplies common in European networks."},{"question":"What fuse coordination is required for 3RT1025-1AP08-0QA2?","answer":"Type 1 coordination requires a 63 A gL/gG fuse; Type 2 coordination requires a 25 A gL/gG fuse. For IEC 60947-4-1 compliance where the contactor must remain operational after a fault, use the 25 A fuse."},{"question":"Where can I buy 3RT1025-1AP08-0QA2?","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":"Does 3RT1025-1AP08-0QA2 mount on standard DIN rail?","answer":"Yes, it mounts via screw and snap-on onto 35 mm standard mounting rail per DIN EN 50022. Side-by-side mounting is allowed with 6 mm spacing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AP08-0QA2","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/3RT1025-1AP08-0QA2 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}}