{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1AR04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1AR04","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1AR04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AR04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1026-1AR04, S0 frame power contactor, 3-pole NO, 11 kW AC-2 at 400 V, 15.5 A AC-4, screw terminals, 45 mm width, IP20 front.","salesMarkdown":"It carries three normally-open main contacts and two instantaneous auxiliary contacts, all terminated with screw-type terminals. The key motor ratings are 11 kW at 400 V in AC-2 duty (slip-ring motor starting, plugging) and 15.5 A in AC-4 duty (reversing, inching). These are the numbers that govern real-world motor switching, not a higher resistive rating. The S0 frame footprint is 45 mm wide by 85 mm tall by 140 mm deep — a standard slot in most motor control center buckets. The front face carries IP20 finger protection; the terminals themselves are IP00 — expect exposed live parts inside the enclosure. Main circuit screw terminals accept solid or stranded copper: 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or max 2x (0.75...4 mm²) — or AWG equivalents 2x (16...12), 2x (14...10), 1x 8. Strip length is the usual 8-10 mm for this terminal class. For short-circuit coordination, type 2 requires a 35 A gL/gG fuse; type 1 allows up to 100 A gL/gG. The coil operates at 50 Hz with a tolerance of 0.8 to 1.1 times rated voltage — meaning it picks up reliably even on a weak supply. For a BOM freeze or second-source gate, the closest functional peer is the 3RT1017-1AP01. The 3RT1026-1AR04 carries the S0 frame and the higher AC-2 motor rating (11 kW vs the smaller frame's lower rating); the 3RT1017-1AP01 is a physically smaller frame. They share the same 3-pole NO topology and screw-terminal termination, but the 3RT1026-1AR04 is the heavier-duty option for the same panel slot width. The AC-4 rating of 15.5 A is the limit for reversing or inching duty cycles. If your load exceeds either, step up to the next SIRIUS frame size. The 10 million mechanical life cycles (typical) mean this contactor is built for high-cycling applications like conveyor lines or pump stations. The electrical life will be lower under load, but the mechanical endurance gives you the headroom for frequent operations.","metaTitle":"Siemens 3RT1026-1AR04 SIRIUS Power Contactor, S0 Frame, 11 k","metaDescription":"Siemens SIRIUS 3RT1026-1AR04 power contactor, S0 frame, 3-pole NO, 11 kW AC-2 at 400 V, 15.5 A AC-4, screw terminals, 45 mm wide, IP20 front, current lifecycle stage.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"140 mm","Solid":"2x (0.5 ... 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":"415 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 (0.5 ... 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=73544&mlfb=3RT1026-1AR04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AR04/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3RT1026-1AR04?","answer":"The closest functional peer is the 3RT1017-1AP01. The 3RT1026-1AR04 is the S0 frame with an 11 kW AC-2 rating; the 3RT1017-1AP01 is a smaller frame with a lower motor rating. Both are 3-pole NO with screw terminals, but the 3RT1026-1AR04 handles heavier loads in the same panel width."},{"question":"What are the physical dimensions of 3RT1026-1AR04?","answer":"The S0 frame measures 45 mm wide, 85 mm tall, and 140 mm deep. It mounts on 35 mm DIN rail per EN 50022 with a 6 mm side gap required for side-by-side mounting."},{"question":"What wire sizes does the 3RT1026-1AR04 accept?","answer":"The main circuit screw terminals accept 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or max 2x (0.75...4 mm²) solid or stranded, and AWG equivalents 2x (16...12), 2x (14...10), 1x 8."},{"question":"What compliance documentation is available for 3RT1026-1AR04?","answer":"The part carries the reference code Q per DIN EN 81346-2 and is rated for pollution degree 3 per IEC 60947-1. Standard Siemens SIRIUS documentation includes CE declaration of conformity and UL/CSA certifications for the product family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1AR04","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/3RT1026-1AR04 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}}