{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-3AP04-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-3AP04-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-3AP04-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3AP04-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1026-3AP04-1AA0 power contactor, size S0, 3-pole, 3 NO main contacts, screw-type terminals, 11 kW rated power at 500 V and 690 V AC-3, 45 mm width, DIN-rail mount.","salesMarkdown":"## SIRIUS S0 power contactor for motor loads It carries 3 NO main contacts rated for AC-3 duty at 11 kW on both 500 V and 690 V supplies, so it handles standard 400 V motors with headroom for higher-voltage installations. The AC-3 motor-switching rating of 11 kW at both 500 V and 690 V means this contactor is sized for a typical 15 hp (11 kW) induction motor on a 400 V line, with enough margin to cover the same motor if the supply is 690 V. For resistive loads (AC-1), the contactor can handle up to the same 10 A continuous as its AC-12 auxiliary rating. Front-side protection is IP20, so finger-safe when installed, while the terminal area is IP00 (no protection), which is standard for panel-mount contactors where the enclosure provides the outer seal. The maximum operating altitude of 2 000 m matches standard low-voltage switchgear limits; above that, dielectric strength and air clearance derate apply. For type 2 coordination (contactor remains usable after a fault), the fuse limit drops to 35 A gL/gG. These values matter when sizing upstream protection for a motor starter combination — the 35 A limit is the one to design around if you want to avoid replacing the contactor after a short circuit. Main circuit terminals are screw-type, accepting 2x (1 to 2.5 mm²) stranded, 2x (2.5 to 6 mm²), or up to 2x 10 mm². AWG equivalents are 2x (16 to 12), 2x (14 to 10), or 1x 8. The auxiliary contact block uses 2x (0.25 to 2.5 mm²) solid or stranded.","metaTitle":"Siemens 3RT1026-3AP04-1AA0 SIRIUS Power Contactor, S0, 11 kW","metaDescription":"Siemens SIRIUS 3RT1026-3AP04-1AA0 power contactor, size S0, rated 11 kW at 500 V and 690 V AC-3. 3 NO main contacts, screw terminals, DIN-rail mount. Current lifecycle stage.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"140 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":"230 V","at 500 V rated value":"11 kW","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":"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=502334&mlfb=3RT1026-3AP04-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3AP04-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this contactor?","answer":"It is rated for 11 kW at both 500 V and 690 V in AC-3 duty, and 15.5 A at 400 V in AC-4 duty. These are the values that govern motor switching capability."},{"question":"Does this contactor drop into a panel designed for 3RT1023-1AL20?","answer":"Both are SIRIUS S0 frame contactors with the same 45 mm width and DIN-rail mounting, so the footprint and rail position are identical. The difference is in the coil voltage and auxiliary contact configuration — verify those match your panel wiring before substituting."},{"question":"What protection coordination fuses are specified?","answer":"Type 1 coordination allows up to 100 A gL/gG fuse; type 2 coordination requires a 35 A gL/gG fuse maximum to keep the contactor reusable after a fault."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-3AP04-1AA0","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/3RT1026-3AP04-1AA0 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}}