{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1AB04-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1AB04-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1AB04-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AB04-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3RT1026-1AB04-1AA0, 3 NO main contacts, 24 VAC 50 Hz coil, screw-type terminals, 45 mm width.","salesMarkdown":"Rated for AC-2 duty at 400 V, it handles 11 kW motor loads, and at AC-4 at 400 V it is rated for 15.5 A — the AC-4 figure governs reversing or inching applications where the contactor makes and breaks the motor at full load. For resistive loads under AC-12, the maximum operating current is 10 A. The coil pulls in at 24 VAC 50 Hz, with an operating range of 0.8 to 1.1 times the rated voltage — so it holds in down to about 19.2 V and picks up reliably at 26.4 V. That range matters when the control transformer is shared with other loads. Front protection is IP20, meaning the contactor is finger-safe when installed in an enclosure. The terminals themselves are rated IP00, so the live parts are exposed until the panel door is closed — standard for panel-mount contactors. Wire sizes: solid conductors accept 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or up to 2x 4 mm². Stranded conductors take 2x 1–2.5 mm², 2x 2.5–6 mm², or up to 2x 10 mm². AWG equivalents for the main contacts are 2x 16–12, 2x 14–10, or 1x 8. No broker or surplus channel is needed for this code. ## Auxiliary contacts and protection The contactor carries two instantaneous auxiliary contacts — one NO and one NC — rated for switching at various control voltages: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, and 3 A at 400 V. For short-circuit protection, coordination type 2 requires a gL/gG fuse rated at 35 A; type 1 coordination allows up to 100 A.","metaTitle":"Siemens 3RT1026-1AB04-1AA0 SIRIUS Power Contactor, S0, 24 VA","metaDescription":"Siemens SIRIUS 3RT1026-1AB04-1AA0 power contactor, size S0, 3-pole, 24 VAC 50 Hz coil, screw terminals, 45 mm wide, current production. Sourced to order via RFQ.","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":"24 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=187508&mlfb=3RT1026-1AB04-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AB04-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT1026-1AB04-1AA0?","answer":"The 3RT1023-1AL20 is a similar SIRIUS S0 contactor, but it uses a 24 VDC coil instead of the 24 VAC 50 Hz coil on this part. If your control circuit is DC, that is a drop-in replacement on the same DIN rail footprint; if it is AC, you need the 3RT1026-1AB04-1AA0."},{"question":"What is the depth of this contactor?","answer":"The depth is 140 mm, measured from the DIN rail mounting surface to the front of the contactor."},{"question":"What wire sizes does the main circuit accept?","answer":"Solid conductors: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or up to 2x 4 mm². Stranded conductors: 2x 1–2.5 mm², 2x 2.5–6 mm², or up to 2x 10 mm². AWG equivalents: 2x 16–12, 2x 14–10, or 1x 8."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1AB04-1AA0","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/3RT1026-1AB04-1AA0 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}}