{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2026-2XB40-1LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2026-2XB40-1LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT2026-2XB40-1LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2026-2XB40-1LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Contactor, 3RT2026-2XB40-1LA2, S0 size, 24 VDC coil, spring-type terminals, screw and snap-on mounting for 35 mm DIN rail.","salesMarkdown":"The Siemens SIRIUS 3RT2026-2XB40-1LA2 is a size S0 contactor with a 24 VDC coil, spring-type terminals on both main and auxiliary contacts, and a screw-and-snap-on mount for 35 mm DIN rail per DIN EN 60715. The 24 VDC coil draws a 3 A inrush peak and holds at 24 V nominal; at 24 V rated value the auxiliary contacts switch 10 A, derating to 2 A at 48 V and 0.3 A at 220 V — the DC switching curve matters if you're running the aux circuit at a different voltage than the coil. Mechanical life is 10,000,000 operations typical, and the contactor is rated for 750 switching cycles per hour under AC-1, AC-2, and AC-3 duty — only AC-4 drops to 250 cycles/hour, so it's built for high-duty motor starting, not just resistive loads. Spring-type terminals accept 2x (1…10 mm²) solid or 2x (0.5…2.5 mm²) stranded on the main contacts, with auxiliary contacts taking 18…8 AWG — no screwdriver torque check, just strip and push. Dimensions are 45 mm wide, 102 mm high, 107 mm deep — the S0 footprint matches other SIRIUS S0 contactors and overload relays, so a panel laid out for that family swaps without re-drilling.","metaTitle":"Siemens 3RT2026-2XB40-1LA2 SIRIUS Contactor, 24 VDC, S0 Size","metaDescription":"Siemens SIRIUS 3RT2026-2XB40-1LA2 contactor, 24 VDC coil, S0 size, spring terminals. Rated for -40 to +70°C. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"107 mm","Solid":"2x (1 ... 10 mm²)","Width":"45 mm","at DC":"30 ... 50 ms","Height":"102 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Type Of Voltage":"DC","at AC-1 maximum":"750 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","Full-Scale Value":"1.25","at AC-3e maximum":"750 1/h","For Main Contacts":"18 ... 8","Mounting Position":"standing, on horizontal mounting surface","Size Of Contactor":"S0","Solid Or Stranded":"2x (0.5 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"3 A","Product Designation":"Contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"3 hp","at 400 V rated value":"3 A","at 480 V rated value":"21 A","at 500 V rated value":"2 A","at 600 V rated value":"22 A","at 690 V rated value":"1 A","Design Of The Product":"With extended operating range","Instantaneous Contact":"1","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"spring-loaded terminals","at 110/120 V rated value":"2 hp","at 200/208 V rated value":"5 hp","at 220/230 V rated value":"7.5 hp","at 460/480 V rated value":"15 hp","at 575/600 V rated value":"20 hp","at AC-2 at AC-3e maximum":"750 1/h","Locked-Rotor Current Peak":"0.52 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"45 mA","at maximum Ith rated value":"10 mm²","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at maximum AC-1 rated value":"10 mm²","at AC in hot operating state":"4.8 W","at AC-2 at 400 V rated value":"11 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"15.5 A","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"30 µs","Locked-Rotor Current Mean Value":"0.3 A","at AWG cables for main contacts":"2x (18 ... 8)","Duration Of Locked-Rotor Current":"180 ms","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG: 35A (690V, 100kA), aM: 20A (690V, 100kA), BS88: 35A (415V, 80kA)","Without Load Current Share Typical":"0.8 W","closing power of magnet coil at DC":"6.7 W","holding power of magnet coil at DC":"1.4 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 100 A (690 V, 100 kA), aM: 50 A (690 V, 100 kA), BS88: 100 A (415 V, 80 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"1.6 W","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"DC","up to 40 °C according to IEC 60077 rated value":"40 A","up to 70 °C according to IEC 60077 rated value":"30 A","Limited To 1 S Switching At Zero Current Maximum":"375 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"299 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"200 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"128 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"106 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/127ec5c5e307f781d909a5b469926c7c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=455060&mlfb=3RT2026-2XB40-1LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2026-2XB40-1LA2/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RT2026-2XB40-1LA2?","answer":"The depth is 107 mm."},{"question":"What wire sizes does the spring terminal accept on the main contacts?","answer":"Solid wire: 2x (1…10 mm²); stranded: 2x (0.5…2.5 mm²)."},{"question":"Will 3RT2026-2XB40-1LA2 drop into a panel designed for 3RT2015-2UB41?","answer":"Both are SIRIUS S0 contactors with the same 45 mm width and DIN-rail snap-on mounting, so the footprint and rail clip are compatible — but verify coil voltage and terminal type (spring vs screw) on the existing panel wiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2026-2XB40-1LA2","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/3RT2026-2XB40-1LA2 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}}