{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1AH00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1AH00","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1AH00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AH00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1026-1AH00 power contactor, S0 frame size, 3-pole normally open main contacts, screw-type terminals, rated 11 kW at AC-2 400 V, 15.5 A at AC-4 400 V.","salesMarkdown":"The terminal area itself is IP00, meaning the wiring zone is open to the enclosure environment, so the panel must maintain its own IP rating around the gland plate. For inching or plugging duty (AC-4 at 400 V), the rated operational current drops to 15.5 A, which is the current it can switch repeatedly without welding the contacts. If your application is a standard squirrel-cage motor start/stop (AC-3), the 11 kW figure is conservative; the contactor will handle that load class without issue, but the AC-2 number is the certified one on the nameplate. The main contacts are 3-pole normally open — no NC pole on the main circuit. That's typical for a line contactor where you want fail-safe disconnection on all three phases. The auxiliary contact block is separate (not included), so if you need a mirror contact or early-make signal, you'll add a side-mount block. For AWG, that's 16 to 10 AWG per clamp, with a single 8 AWG max. The terminal design is the standard box lug — strip length around 10 mm, torque to the value on the contactor label. For Type 2 coordination (no weld, contactor stays operational after a short circuit), the fuse must be limited to 35 A gL/gG. That's a significant difference — if your panel spec calls for Type 2, the 35 A fuse is mandatory, and the upstream breaker must coordinate with it.","metaTitle":"Siemens 3RT1026-1AH00 SIRIUS Contactor, S0 Frame, 11kW AC-2","metaDescription":"Siemens SIRIUS 3RT1026-1AH00 power contactor, S0 size, 3-pole NO, screw terminals, 11 kW at AC-2 400V, 15.5 A AC-4. Current lifecycle stage. Sourced to order.","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 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 (0.5 ... 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=352056&mlfb=3RT1026-1AH00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AH00/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to the 3RT1026-1AH00?","answer":"The 3RT1017-1AP01 is a smaller-frame SIRIUS contactor (S00 size) with a different rating profile. It will not drop into a panel wired for the S0 frame without changing the DIN rail mounting foot and rewiring the main terminals. The 3RT1026-1AH00 is the correct S0-frame part for 11 kW AC-2 duty."},{"question":"What is the depth of the 3RT1026-1AH00?","answer":"The depth is 91 mm from the mounting surface to the front face. This fits within a standard 100 mm deep enclosure with room for wiring."},{"question":"What conductor sizes does the main terminal accept?","answer":"The screw terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²). For stranded: 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or max 2x 10 mm². AWG equivalents are 2x (16 to 12), 2x (14 to 10), or 1x 8."},{"question":"What compliance documentation is available for the 3RT1026-1AH00?","answer":"The part carries a reference code per DIN EN 81346-2 (Q for power switching). Standard Siemens SIRIUS documentation includes the CE declaration, RoHS and REACH compliance statements, and UL/CSA file numbers. Specific certificates are provided with the shipment upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1AH00","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/3RT1026-1AH00 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}}