{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1BG40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1BG40","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1BG40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1BG40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1026-1BG40, S0 frame, screw-type terminals, 10 A AC-12 rated operating current, 45 mm width, for 35 mm DIN rail per EN 50022.","salesMarkdown":"The front face carries IP20 finger protection, while the terminals themselves are rated IP00, meaning the wiring zone is exposed and should be inside a closed enclosure. The headline rating is 10 A at AC-12 (resistive load) — that is the maximum continuous current the main contacts can carry in a non-inductive circuit. For motor duty, the critical numbers are 11 kW at AC-2 (slip-ring motors, 400 V) and 15.5 A at AC-4 (plugging/reversing duty, 400 V). These duty-specific ratings are the ones that govern real motor switching — the AC-12 figure alone would overstate capability on an inductive load. ## Terminal wiring and coordination Main current circuit terminals are screw-type, accepting solid conductors from 2x (0.5... 1.5 mm²) up to 2x (0.75... 4 mm²) for the smaller range, and stranded from 2x (1... 2.5 mm²) up to max 2x 10 mm². AWG equivalents are 2x (16... 12) and 2x (14... 10) with a single 8 AWG maximum. ## Coil and auxiliary contact characteristics Auxiliary contact ratings cover DC switching: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, and AC switching at 230 V (6 A) and 400 V (3 A).","metaTitle":"Siemens 3RT1026-1BG40 SIRIUS Power Contactor, S0, 10A AC-12","metaDescription":"Siemens 3RT1026-1BG40 SIRIUS power contactor, S0 frame, 10A AC-12 max, 11kW AC-2/AC-3 at 400V, 45mm wide, screw terminals, IP20 front, current production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"101 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 The Side":"6 mm","Rated Value":"125 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":"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","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=418113&mlfb=3RT1026-1BG40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1BG40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1026-1BG40?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time figure is published here."},{"question":"What compliance documentation does Siemens provide for 3RT1026-1BG40?","answer":"As a standard SIRIUS catalog item, this contactor carries CE marking for the European market and is designed to meet RoHS and REACH requirements. The reference code per DIN EN 81346-2 is Q (power switching device). For specific UL/CSA file numbers or IEC certification certificates, request them with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1BG40","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/3RT1026-1BG40 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}}