{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1BB40-1AA0-ZW95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1BB40-1AA0-ZW95","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1BB40-1AA0-ZW95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1BB40-1AA0-ZW95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1026-1BB40-1AA0-ZW95 power contactor, Size S0, 24 VDC coil, screw-type terminals, 45 mm width, 85 mm height, 101 mm depth.","salesMarkdown":"The 24 VDC coil draws 5.4 W on closing and holds at 5.4 W — a constant-power coil, so there's no inrush spike to factor into your 24 VDC supply budget. That holding power is the same as the closing power, which simplifies sizing the DC supply for a bank of contactors. ## Motor switching capability across voltages This contactor is rated for 11 kW at 400 V in AC-3 duty (squirrel-cage motor starting), and the same 11 kW at 690 V — so it handles the common European 400 V line and the higher 690 V industrial supply without derating the motor power. At 500 V it also carries 11 kW. For AC-4 duty (plugging/reversing/inching) at 400 V, the rated operating current is 15.5 A. These are the numbers that decide whether this contactor fits your motor nameplate. The auxiliary contact block handles switching at 24 VDC at 10 A, 60 VDC at 2 A, 110 VDC at 1 A, and 220 VDC at 0.3 A — so the DC break capacity drops sharply as voltage rises, which is typical for air-break contacts. If you're switching a DC control circuit above 60 V, verify the load current against these limits. ## Mounting, wiring, and environment Screw-type terminals for the main circuit accept 2x (1... 2.5 mm²) solid/stranded, 2x (2.5... 6 mm²), or max. 2x 10 mm². The control circuit (coil) terminals accept 2x (0.5... 1.5 mm²) solid, 2x (0.75... 2.5 mm²), or max. 2x (0.75... 4 mm²). Side-by-side mounting is allowed with a 6 mm gap at the side — no derating if you keep that clearance. Rated for operation from -25 °C to +60 °C, pollution degree 3 (industrial environment with conductive pollution), and altitude up to 2,000 m without derating.","metaTitle":"Siemens 3RT1026-1BB40-1AA0-ZW95 SIRIUS Power Contactor, 24 V","metaDescription":"Siemens SIRIUS 3RT1026-1BB40-1AA0-ZW95 power contactor, Size S0, 24 VDC coil, 5.4 W holding power, rated for 11 kW at 400 V AC-3. Current production, available to order via RFQ.","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":"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":"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=249316&mlfb=3RT1026-1BB40-1AA0-ZW95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1BB40-1AA0-ZW95/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1026-1BB40-1AA0-ZW95 and how do I get a price?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is the motor power rating of this contactor at 400 V?","answer":"It is rated for 11 kW at 400 V in AC-3 duty, and the same 11 kW at 690 V."},{"question":"What is the coil voltage and power draw for 3RT1026-1BB40-1AA0-ZW95?","answer":"The coil is 24 VDC with a closing and holding power of 5.4 W — constant-power, no inrush spike."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1BB40-1AA0-ZW95","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/3RT1026-1BB40-1AA0-ZW95 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}}