{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-3AC20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-3AC20","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-3AC20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3AC20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, 3RT1026-3AC20, size S0, 11 kW at 400 V AC-3, 24 VDC coil, screw-type terminals, 45 mm width, DIN EN 50022 rail mount.","salesMarkdown":"## Contactor selection brief The Siemens 3RT1026-3AC20 is a SIRIUS power contactor in the S0 frame size, rated for 11 kW at 400 V AC-3. The 24 VDC coil keeps it in the common PLC-level control voltage range, so no separate transformer or AC bridge is needed. For type 2 coordination (no-weld-on-fault), the required upstream fuse is 35 A gL/gG; for type 1 coordination, 100 A gL/gG. The 45 mm width occupies one standard 45 mm module slot on the rail. Main circuit terminals are screw-type, accepting 2x (1 to 2.5 mm²) solid or stranded, 2x (2.5 to 6 mm²), or max 2x 10 mm². Auxiliary wiring accepts 2x (0.25 to 2.5 mm²) solid. Side-by-side mounting is permitted with zero spacing, and the side clearance required is 6 mm — typical for S0 contactors in a dense rail layout.","metaTitle":"Siemens 3RT1026-3AC20 SIRIUS Power Contactor, 11 kW @ 400V A","metaDescription":"Siemens SIRIUS 3RT1026-3AC20 power contactor, size S0, 11 kW at 400 V AC-3, 24 VDC coil, screw terminals, DIN rail mount. Active production. Source to order via RFQ.","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","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 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 400 V rated value":"11 kW","at 50 Hz rated value":"24 V","at 500 V rated value":"11 kW","at 60 Hz rated value":"24 V","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","With Type Of Assignment 2 Required":"fuse gL/gG: 35 A","operating current at AC-12 maximum":"10 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","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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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","operating current at AC-15 at 230 V rated value":"6 A","operating current at AC-15 at 400 V rated value":"3 A","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","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000","type of connectable conductor cross-sections at AWG conductors for auxiliary contacts":"2x (24 ... 14)"}},"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=216627&mlfb=3RT1026-3AC20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3AC20/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of the 3RT1026-3AC20?","answer":"The depth is 90 mm, with a width of 45 mm and height of 85 mm. This fits a standard 45 mm DIN-rail slot."},{"question":"What wire sizes does the 3RT1026-3AC20 accept?","answer":"Main circuit screw terminals accept 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or max 2x 10 mm² stranded/solid. Auxiliary terminals accept 2x (0.25 to 2.5 mm²) solid. AWG equivalents: main 2x (16 to 12), 2x (14 to 10), 1x 8."},{"question":"Will 3RT1026-3AC20 drop into a panel specified around 3RT1034-1AN60-1AA0?","answer":"No — the 3RT1034-1AN60-1AA0 is a larger frame size with a different footprint and higher current rating. The 3RT1026-3AC20 (S0, 45 mm wide) is physically smaller and electrically lower-rated. Rewiring and possibly a different DIN-rail layout would be required."},{"question":"What compliance documentation is available for 3RT1026-3AC20?","answer":"The contactor carries a reference code per DIN EN 81346-2 and is designed for pollution degree 3 per IEC 60947-1. Standard Siemens SIRIUS documentation includes CE declaration of conformity and UL/CSA recognition for the series. Specific certificates (RoHS, REACH, UL) are available on request via the RFQ process."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-3AC20","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/3RT1026-3AC20 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}}