{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1AD04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1AD04","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1AD04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AD04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1026-1AD04 power contactor, size S0, 3-pole normally open main contacts, screw-type terminals, 11 kW at 400 V AC-2, 45 mm width.","salesMarkdown":"It is designed for switching motor loads under AC-2 duty (slip-ring motors, starting and running) and resistive loads under AC-1, with a rated power of 11 kW at 400 V in AC-2 and 11 kW at both 500 V and 690 V. The AC-12 rating of 10 A maximum operating current applies to resistive loads and control circuits, giving a clean upper bound for non-inductive switching. This matters when coordinating with upstream protection in a motor control center — the 35 A limit is the one to design to if you want to avoid replacing the contactor after a fault. ## Mounting and wiring in the panel The screw terminals accept solid conductors from 2x 0.5 to 1.5 mm² up to 2x 0.75 to 4 mm², and stranded conductors from 2x 1 to 2.5 mm² up to 2x 2.5 to 6 mm², with a maximum of 2x 10 mm² — covering typical motor feeder cables up to about 8 AWG. The front of the contactor carries an IP20 rating, meaning finger-safe against accidental contact, while the terminal area itself is IP00 — so live parts are exposed during wiring and the panel enclosure provides the overall protection.","metaTitle":"Siemens 3RT1026-1AD04 SIRIUS Power Contactor, S0, 11 kW at 4","metaDescription":"Siemens SIRIUS 3RT1026-1AD04 power contactor, size S0, 3-pole NO, 11 kW at 400 V AC-2. Current production. Screw terminals, DIN-rail mount. Sourced to order.","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":"42 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=171364&mlfb=3RT1026-1AD04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AD04/alternatives.json"},"ai":{"faq":[{"question":"What are the main contact ratings for this contactor?","answer":"The 3RT1026-1AD04 has three normally open main contacts. At 400 V in AC-2 duty it is rated for 11 kW motor load. At 500 V and 690 V it is also rated for 11 kW. For AC-4 inching duty at 400 V the rated operating current is 15.5 A. For AC-12 resistive loads the maximum operating current is 10 A."},{"question":"What fuse rating is required for Type 2 coordination?","answer":"Type 2 coordination requires a gL/gG fuse rated at 35 A. Type 1 coordination allows up to 100 A gL/gG."},{"question":"What is the physical size and mounting of this contactor?","answer":"The contactor is size S0 with dimensions 45 mm width, 85 mm height, and 140 mm depth. It mounts via screw or snap-on onto a 35 mm DIN rail per EN 50022. Side-by-side mounting is permitted without derating."},{"question":"What wire sizes does the screw terminal accept?","answer":"For solid conductors: 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², max 2x 0.75 to 4 mm². For stranded conductors: 2x 1 to 2.5 mm², 2x 2.5 to 6 mm², max 2x 10 mm². AWG equivalents: 2x 16 to 12, 2x 14 to 10, 1x 8."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1AD04","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/3RT1026-1AD04 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}}