{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1DB44-0KV0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1DB44-0KV0","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1DB44-0KV0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1DB44-0KV0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1026-1DB44-0KV0 power contactor, size S0, 24 V DC coil, 11 kW at 400 V AC-2, 15.5 A at 400 V AC-4, built-in varistor surge suppression, screw terminals, snap-on DIN rail mount.","salesMarkdown":"The Siemens 3RT1026-1DB44-0KV0 is a SIRIUS power contactor in frame size S0, rated for switching motor loads up to 11 kW at 400 V in AC-2 duty (slip-ring motors, reversing) and 15.5 A at 400 V in AC-4 duty (plugging, inching). The 24 V DC magnet coil draws 5.4 W closing and holding, with a built-in varistor surge suppressor across the coil — no external snubber needed for DC switching. Screw-type terminals on the main circuit accept up to 2x 10 mm² stranded or 2x 4 mm² solid, and the two instantaneous auxiliary contacts (1 NO + 1 NC) are rated 10 A at 24 V. The 45 mm wide, 88 mm tall, 150 mm deep footprint fits standard S0 panel layouts. Side-by-side mounting is allowed with zero gap — no derating required for adjacent units. For Type 1 coordination (contactor may need replacement) the fuse can be 100 A gL/gG. This part carries a current lifecycle status. No official successor order code is recorded — this remains the active catalog number for the S0 24 VDC contactor with built-in varistor.","metaTitle":"Siemens 3RT1026-1DB44-0KV0 SIRIUS Power Contactor, 24 VDC, 1","metaDescription":"Siemens SIRIUS 3RT1026-1DB44-0KV0 power contactor, size S0, 24 VDC coil, 11 kW at 400 V AC-2. Built-in varistor surge suppressor. Current lifecycle. Sourced to order. RFQ for price","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"150 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"88 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.8","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","Full-scale value":"1.1","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 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","Design of the surge suppressor":"with varistor","Closing power of magnet coil at DC":"5.4 W","Holding power of magnet coil at DC":"5.4 W","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","Type of voltage of the control supply voltage":"DC","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=502810&mlfb=3RT1026-1DB44-0KV0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1DB44-0KV0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1026-1DB44-0KV0 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time."},{"question":"What is the closest functional alternative to 3RT1026-1DB44-0KV0?","answer":"The 3RT1023-1AL20 is a smaller S0 frame contactor but with a 24 V AC coil and a different auxiliary contact configuration. It will not drop into the same panel without rewiring the coil supply and checking the auxiliary contact count. The 3RT1016-1AR11 and 3RT1015-1BB42 are also S0 but with different coil voltages and auxiliary arrangements. For a direct functional match with the 24 V DC coil and built-in varistor, the 3RT1026-1DB44-0KV0 is the active catalog number."},{"question":"What are the key ratings for this contactor?","answer":"AC-2 motor rating: 11 kW at 400 V. AC-4 rating: 15.5 A at 400 V. Coil: 24 V DC, 5.4 W. Auxiliary contacts: 2 instantaneous (1 NO + 1 NC), rated 10 A at 24 V. Built-in varistor surge suppressor."},{"question":"What compliance documentation does Siemens provide for this part?","answer":"As a current SIRIUS product, it carries CE marking for the European market and is designed to meet relevant IEC/EN standards. Specific documentation (RoHS, REACH, UL file) is available through Siemens Industry Online Support or upon request with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1DB44-0KV0","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/3RT1026-1DB44-0KV0 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}}