{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1AH20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1AH20","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1AH20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AH20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1026-1AH20, power contactor, size S0, 11 kW at 400 V AC-2, screw-type terminals, 45 mm width, IP20 front.","salesMarkdown":"Screw-type terminals handle both main and auxiliary circuits; the auxiliary contacts provide 10 A and 6 A for coil holding and signal feedback. ## Key ratings for selection AC-4 rating of 15.5 A defines the inching/plugging capability. Coil pickup/dropout tolerances: 0.8–1.1 × rated voltage at 50 Hz, 0.85–1.1 at 60 Hz – expect reliable hold across typical line variations. Overall dimensions 85 mm height × 45 mm width × 91 mm depth. Wire range: solid stranded 0.5–4 mm² (2×) for main contacts; auxiliary contacts accept 1–2.5 mm² (2×). Use ferruled stranded for easier insertion into screw clamps. Side-by-side mounting allowed without derating – stack multiple units for multi-speed or reversing starters.","metaTitle":"Siemens 3RT1026-1AH20 SIRIUS Contactor, S0, 11 kW AC-2","metaDescription":"Siemens 3RT1026-1AH20 SIRIUS power contactor, size S0, rated 11 kW at 400 V AC-2. Currently in active production. Sourced to order. RFQ for best lead time.","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","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","Of The Terminal":"IP00","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Size Of Contactor":"S0","Solid Or Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²","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 60 Hz rated value":"48 V","at 690 V rated value":"11 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"11 kW","at AC-4 at 400 V rated value":"15.5 A","Substance Prohibitance (Date)":"01.07.2006 00:00:00","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 35 A","reference code acc. to IEC 81346-2":"Q","With Type Of Coordination 1 Required":"fuse gL/gG: 100 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","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","Required Spacing For Grounded Parts At The Side":"6 mm","Inductive Power Factor With Closing Power Of The Coil":"0.72","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$148.00","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=276362&mlfb=3RT1026-1AH20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AH20/alternatives.json"},"ai":{"faq":[{"question":"What wire sizes fit the main and auxiliary terminals?","answer":"Main terminals accept 2× solid/stranded (0.5–4 mm²), max 2× (0.75–4 mm²). Auxiliary terminals accept 2× (1–2.5 mm²), max 2× 10 mm². AWG equivalents: main 2× (16–12), auxiliary 2× (20–14), single up to 8 AWG."},{"question":"What is the mounting method and footprint?","answer":"Screw or snap-on mounting onto 35 mm DIN rail per EN 50022. Width is 45 mm, height 85 mm, depth 91 mm. Side-by-side mounting is permitted without gap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1AH20","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/3RT1026-1AH20 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}}