{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1BE44","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1BE44","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1BE44","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1BE44","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1026-1BE44, S0 frame size, 24 VDC coil, screw terminals, 45 mm width, IP20 front.","salesMarkdown":"For straight across-the-line starting (AC-3), the motor power rating at 400 V is not explicitly listed here, but the AC-4 figure gives you the worst-case thermal limit for high-stress cycling. The AC-12 maximum operating current is 10 A, which covers resistive loads like heaters or lighting banks where the inrush is minimal. The difference between AC-12 and AC-4 matters: you wouldn't size this contactor for a 10 A motor load — the AC-4 derating is real. The magnet coil is 24 VDC, with a closing power and holding power both rated at 5.4 W. That's a continuous-duty coil — it stays energized without overheating, so no need for a separate economizer circuit. The DC coil also means no hum and no inrush spike that can brown out a 24 VDC bus shared with PLC outputs. ## Short-circuit coordination and wiring Panel builders specifying a common bus should note the 35 A limit if they want to avoid replacing the contactor after a short. Main circuit terminals accept screw-type connections: solid or stranded wire from 2x (0.5 to 1.5 mm²) up to a maximum of 2x (0.75 to 4 mm²). For AWG, that's 2x (16 to 12) up to 1x 8. The 45 mm width and 85 mm height leave room for finger-friendly wiring in a crowded enclosure. The terminals themselves are rated IP00, so the contactor must be installed inside a cabinet or enclosure that provides the overall IP rating. Side-by-side mounting is allowed with a 6 mm gap at the side. No derating is required for side-by-side placement at rated current, but the 6 mm clearance ensures natural convection cooling isn't blocked.","metaTitle":"Siemens 3RT1026-1BE44 SIRIUS Power Contactor, S0, 24 VDC Coi","metaDescription":"Siemens SIRIUS 3RT1026-1BE44 power contactor, S0 frame, 24 VDC coil, 15.5 A AC-4 at 400 V. Active production, DIN rail mount. Sourced to order against RFQ.","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":"60 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=467859&mlfb=3RT1026-1BE44","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1BE44/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT1026-1BE44?","answer":"The peer 3RT1015-1BB42 is a smaller S00 frame contactor with a lower AC-3 rating. It will not drop into the same footprint — the S0 frame has a 45 mm width versus S00's 45 mm width but different depth and terminal layout. For a direct functional replacement at the same frame size and coil voltage, stick with the 3RT1026-1BE44."},{"question":"What are the key ratings for this contactor?","answer":"AC-4 at 400 V: 15.5 A. AC-12 maximum: 10 A. Coil: 24 VDC, 5.4 W holding. Motor power at 500 V and 690 V: 11 kW each. Dimensions: 45 mm wide, 85 mm high, 150 mm deep."},{"question":"What compliance documentation is available for this part?","answer":"The part carries a DIN EN 81346-2 reference code Q. Standard Siemens SIRIUS documentation includes CE, UL, CSA, and RoHS declarations — these are available through the manufacturer's support portal. Specific certification marks are not listed in this record, but the SIRIUS line is typically UL/CSA listed for the North American market."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1BE44","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/3RT1026-1BE44 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}}