{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-3AL20-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-3AL20-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-3AL20-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3AL20-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, size S0, 3RT1026-3AL20-1AA0, screw-type main terminals and spring-loaded auxiliary/control terminals, 45 mm width, 85 mm height, 91 mm depth, IP20 front / IP00 terminals.","salesMarkdown":"Main power terminals are screw-type; the auxiliary and control circuit uses spring-loaded terminals, so no tool is needed for the control wiring side. The AC-4 figure is the one that governs real motor life on reversing or jogging applications; if your circuit cycles through stall current, size against the 15.5 A AC-4 row, not a higher AC-3 number. Auxiliary contact ratings cover the full control-voltage spread: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V. The 690 V main circuit rating supports 11 kW output — common for 690 V delta-connected motors in European or mining installations. ## Coordination and protection requirements These are the fusing limits for the main circuit; the auxiliary circuit has its own AWG limits (2x 24–14). Current production stage. Side-by-side mounting is permitted — no derating required for adjacent units. The front face carries IP20 (finger-safe), while the terminals are rated IP00 (no protection against tool or wire contact), so panel builders should cover exposed terminals with a shrouding or keep clearance in the enclosure.","metaTitle":"Siemens 3RT1026-3AL20-1AA0 SIRIUS Power Contactor, S0, 15.5","metaDescription":"Siemens SIRIUS 3RT1026-3AL20-1AA0 power contactor, size S0, rated 15.5 A AC-4 at 400 V. Screw-type main terminals, spring-loaded aux/control. Current lifecycle stage; sourced to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 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","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":"230 V","at 500 V rated value":"11 kW","at 60 Hz rated value":"230 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":"spring-loaded 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 (24 ... 14)","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 (0.25 ... 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)","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","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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=256281&mlfb=3RT1026-3AL20-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-3AL20-1AA0/alternatives.json"},"ai":{"faq":[{"question":"Does 3RT1026-3AL20-1AA0 drop into a panel wired for 3RT1017-1AP01?","answer":"Both are SIRIUS S0 frame contactors on 45 mm width, so the DIN-rail footprint and panel cutout are identical. Main power terminal wiring (screw-type on both) and auxiliary terminal wiring (spring-loaded on both) use the same wire ranges. No rewiring of the panel layout is needed — the swap is mechanical and electrical drop-in."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-3AL20-1AA0","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/3RT1026-3AL20-1AA0 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}}