{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1BP44","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1BP44","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1BP44","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1BP44","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1026-1BP44, size S0, screw-type terminals, 11 kW at 400 V AC-2, 15.5 A at 400 V AC-4, screw and snap-on DIN rail mount, IP20 front.","salesMarkdown":"Its key motor-switching ratings are 11 kW at 400 V in AC-2 duty (for slip-ring motors or reversing starts) and 15.5 A at 400 V in AC-4 duty (for plugging or inching). The main circuit uses screw-type terminals, accepting 2x (1... 2.5 mm²) or 2x (2.5... 6 mm²) or max. 2x 10 mm² stranded, and 2x (16... 12), 2x (14... 10), or 1x 8 AWG. The auxiliary contacts are rated for switching at various control voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V DC. For BOM freeze or long-term planning, this part is stable: no PCN or EOL notice is known. If you need a second-source or drop-in replacement, the closest functional peer is the 3RT1023-1AL20 — same S0 frame, same screw-type main terminals, same DIN rail footprint — but its motor ratings differ (lower AC-3 current), so verify the load before swapping. The 3RT1026-1BP44 carries a higher AC-2/AC-4 capability, so it is the more robust choice for reversing or inching duty. The contactor occupies a 45 mm wide by 85 mm high by 150 mm deep footprint on the DIN rail. Side-by-side mounting is allowed (6 mm spacing at the side), so you can gang multiple units without derating — useful for multi-motor groups in a compact panel. Front protection is IP20, meaning it's touch-safe for the operator side but not sealed against washdown. The terminals themselves are rated IP00, so the wiring area is open — standard for panel-mount contactors where the enclosure provides the overall IP rating. Coil power is 5.4 W both for closing and holding at DC, so the control transformer sizing is straightforward — no inrush spike beyond the steady-state draw. For short-circuit coordination, type 2 coordination requires a 35 A gL/gG fuse; type 1 allows up to 100 A gL/gG.","metaTitle":"Siemens 3RT1026-1BP44 SIRIUS Power Contactor, S0 Frame, 11 k","metaDescription":"Siemens 3RT1026-1BP44 SIRIUS power contactor, size S0, screw-type terminals, 11 kW at 400 V AC-2, 15.5 A AC-4. Current lifecycle stage. DIN rail mount. IP20 front.","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":"230 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=206947&mlfb=3RT1026-1BP44","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1BP44/alternatives.json"},"ai":{"faq":[{"question":"What replaces 3RT1026-1BP44 if it becomes obsolete?","answer":"No official successor has been announced. The closest functional second-source is the 3RT1023-1AL20 — same S0 frame and DIN rail mount — but its motor ratings are lower, so verify the load before substituting."},{"question":"What is the mounting and environmental rating?","answer":"Mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 50022. IP20 front protection, IP00 terminals. Operating range -25 to +60 °C, pollution degree 3."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1BP44","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/3RT1026-1BP44 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}}