{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1AG20-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1AG20-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1AG20-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AG20-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1026-1AG20-1AA0, size S0 power contactor, screw terminals, 11 kW at 400 V AC-2, 45 mm wide, snap-on DIN rail.","salesMarkdown":"## Integrator's spec recap — SIRIUS 3RT1026-1AG20-1AA0 The Siemens SIRIUS 3RT1026-1AG20-1AA0 is a size S0 power contactor rated for motor switching at 11 kW on 400 V in AC-2 duty, and 15.5 A in AC-4 duty at the same voltage — so it handles both slip-ring motor starting and plugging/reversing cycles without derating the main poles. Screw-type terminals on the main circuit accept up to 2x 10 mm² or 1x AWG 8, with a separate solid/stranded range of 2x (0.5 to 1.5 mm²) through max 2x (0.75 to 4 mm²) for auxiliary wiring. ## Coordination and protection — what the ratings mean For Type 1 coordination (contactor may need replacement after fault), the fuse can go to 100 A gL/gG — the 35 A path is what you'd spec for minimal downtime on a motor branch. Rated operational power reaches 11 kW at both 500 V (50 Hz) and 690 V (60 Hz), so the contactor is not voltage-limited within that band — the motor full-load current determines the selection, not the voltage step. Auxiliary contact ratings: 10 A at 24 V, 6 A at 230 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V — the DC switching curve drops fast above 60 V, so verify the control voltage if running DC pilot circuits above that. No official successor or replacement order code is published; this is the active variant. If you are matching a BOM line that specifies 3RT1026-1AG20-1AA0, it is the direct fit. ## Panel and environmental fit Dimensions: 85 mm high, 45 mm wide, 91 mm deep — fits S0 contactor cutouts in standard IEC enclosures. Side-by-side mounting is permitted (no derating gap needed for thermal stacking in open air). Altitude limit 2 000 m without derating. Front protection IP20 (finger-safe terminals when wired); the terminal body itself is rated IP00 — so the contactor must be mounted inside an enclosure that provides the overall panel IP rating.","metaTitle":"Siemens 3RT1026-1AG20-1AA0 SIRIUS Power Contactor, S0, 11 kW","metaDescription":"Siemens SIRIUS 3RT1026-1AG20-1AA0 power contactor, size S0, 11 kW at 400 V AC-2, screw terminals, snap-on DIN rail. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 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":"11 kW","at 60 Hz rated value":"110 V","at 690 V rated value":"11 kW","Instantaneous Contact":"0","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":"11 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: 35 A","at AWG conductors for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","With Type Of Coordination 1 Required":"fuse gL/gG: 100 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=69285&mlfb=3RT1026-1AG20-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AG20-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this contactor?","answer":"At 400 V AC-2 duty it is rated for 11 kW; at 400 V AC-4 duty the operational current is 15.5 A. It also delivers 11 kW at both 500 V (50 Hz) and 690 V (60 Hz)."},{"question":"What upstream fuse should I use for Type 2 coordination?","answer":"For Type 2 coordination (no damage to the contactor under short circuit), use a gL/gG fuse rated 35 A. For Type 1 coordination, a 100 A gL/gG fuse is permitted."},{"question":"Does this contactor mount on standard DIN rail?","answer":"Yes, it mounts via screw or snap-on onto 35 mm DIN rail per EN 50022. It is 45 mm wide and permits side-by-side mounting without additional spacing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1AG20-1AA0","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/3RT1026-1AG20-1AA0 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}}