{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-3AH00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-3AH00","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-3AH00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3AH00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1026-3AH00 power contactor, Size S0, 3-pole NO, screw terminals, 11 kW at 400 V AC-3, 45 mm wide, DIN EN 50022 rail mount.","salesMarkdown":"The Siemens SIRIUS 3RT1026-3AH00 is a Size S0 power contactor with three normally-open main contacts, rated for switching three-phase motor loads up to 11 kW at 400 V in AC-3 duty, and the same power rating at 500 V and 690 V. The 11 kW AC-3 rating at 400 V is the headline motor-switching figure — it tells you this contactor handles a standard 15 hp (11 kW) four-pole induction motor on a 400 V line. For resistive loads (AC-1), the contactor is rated 10 A at 230 V and 6 A at 400 V. The AC-12 operating current is also 10 A, which covers control-circuit loads like PLC outputs or signal lamps. The AC-4 current of 15.5 A at 400 V is the figure to check if your application requires frequent plugging or inching — standard AC-3 switching doesn't stress the contacts the same way. The auxiliary contact ratings cover a wide control-voltage range: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V. That means the same auxiliary block works across 24 VDC and 110 VAC control circuits without swapping coils. Dimensions are 45 mm wide, 85 mm high, 90 mm deep — a compact S0 footprint that fits standard 45 mm module spacing on the DIN rail. Main circuit terminals are screw-type, accepting 2x (0.25...2.5 mm²) solid or 2x (1...2.5 mm²) stranded, up to 2x 10 mm² or 1x AWG 8. The auxiliary terminals accept 2x (0.25...2.5 mm²) solid. Strip length is not stated in the spec, but standard practice for this terminal class is 8-10 mm. Short-circuit coordination: with type 2 coordination (no welding after fault), use a gL/gG fuse rated 35 A. With type 1 coordination (welding allowed but no fire risk), the fuse can go up to 100 A. The contactor itself has no instantaneous trip — it relies on upstream protection. For BOM-freeze planning: the SIRIUS S0 platform is a mature, widely-installed family. If a second-source or drop-in alternative is needed, the closest functional peer is the 3RT1034-1AN60-1AA0 — but verify terminal layout and auxiliary contact configuration before substituting, as the frame size and mounting footprint differ. The rated frequency is 50 Hz, with an operating range of 0.8 to 1.1 times nominal voltage at that frequency.","metaTitle":"Siemens 3RT1026-3AH00 SIRIUS Power Contactor, Size S0, 11 kW","metaDescription":"Siemens SIRIUS 3RT1026-3AH00 power contactor, Size S0, 3 NO main contacts, screw terminals, 11 kW at 400 V AC-3, 45 mm wide, DIN rail mount. Current lifecycle stage.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"90 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 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":"48 V","at 500 V rated value":"11 kW","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 (0.25 ... 1.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"spring-loaded 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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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=326666&mlfb=3RT1026-3AH00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3AH00/alternatives.json"},"ai":{"faq":[{"question":"What is the physical size and mounting?","answer":"It is a Size S0 contactor, 45 mm wide, 85 mm high, 90 mm deep. It mounts on a 35 mm DIN rail per DIN EN 50022, either snapped on or screwed. Side-by-side mounting is allowed with 6 mm side clearance."},{"question":"What wire sizes does the screw terminal accept?","answer":"Main terminals accept 2x (0.25...2.5 mm²) solid, 2x (1...2.5 mm²) stranded, up to 2x 10 mm² or 1x AWG 8. Auxiliary terminals accept 2x (0.25...2.5 mm²) solid."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-3AH00","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/3RT1026-3AH00 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}}