{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1BM44-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1BM44-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1BM44-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1BM44-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S0 frame, 3RT1026-1BM44-1AA0, screw-type terminals, 11 kW at 400 V AC-2, 15.5 A AC-4, IP20 front, snap-on 35 mm DIN rail.","salesMarkdown":"Rated 11 kW at 400 V in AC-2 duty (slip-ring motors, soft-start applications) and 11 kW at both 500 V and 690 V, this contactor handles the common European motor voltages. For resistive loads (AC-12), it carries 10 A continuously. The screw-type main terminals accept up to 10 mm² stranded or 4 mm² solid conductors, with dual-wire capability for daisy-chaining. Type 1 coordination (contactor may need replacement but the circuit is cleared) allows up to 100 A gL/gG. This matters when you're specifying upstream protection for a motor branch circuit. ## Dimensions and Environment Side-by-side mounting is allowed with a 6 mm gap to adjacent devices for heat dissipation. The terminal area is IP00 — safe inside an enclosure but not touch-safe open. Maximum operating altitude is 2000 m without derating, covering most installations.","metaTitle":"Siemens 3RT1026-1BM44-1AA0 SIRIUS Power Contactor, S0, 11 kW","metaDescription":"Siemens 3RT1026-1BM44-1AA0 SIRIUS power contactor, S0 frame, 11 kW at 400 V AC-2, 15.5 A AC-4, screw terminals, IP20 front. Current production. Quoted to order.","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":"85 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"220 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","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=240389&mlfb=3RT1026-1BM44-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1BM44-1AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT1026-1BM44-1AA0?","answer":"Submit an RFQ through this listing. Pricing and availability are confirmed at quote time through independent distribution channels."},{"question":"What is 3RT1026-1BM44-1AA0's listed depth?","answer":"The depth is 150 mm, which fits standard 200 mm deep enclosures."},{"question":"What conductor sizes does the main terminal accept?","answer":"Solid conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), max 2x (0.75–4 mm²). Stranded: 2x (1–2.5 mm²), 2x (2.5–6 mm²), max 2x 10 mm². AWG equivalents: 2x (16–12), 2x (14–10), 1x 8."},{"question":"Will 3RT1026-1BM44-1AA0 drop into a panel specified around 3RT1023-1AL20 without rewiring?","answer":"Both are S0-frame Siemens SIRIUS contactors with the same mounting footprint and terminal layout, so mechanical fit is identical. However, the 3RT1026-1BM44-1AA0 has a different coil voltage and higher current ratings — verify the coil rating matches your control circuit and the load current doesn't exceed the 3RT1023-1AL20's original rating before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1BM44-1AA0","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/3RT1026-1BM44-1AA0 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}}