{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2026-2DM40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2026-2DM40","canonicalUrl":"https://aoctrl.com/siemens/3RT2026-2DM40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2026-2DM40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3RT2026-2DM40, spring-type terminals, 3-pole, 107 mm depth, 45 mm width, 102 mm height.","salesMarkdown":"## Siemens 3RT2026-2DM40 — SIRIUS Power Contactor, S0 Frame The contactor sits at 107 mm deep, 45 mm wide, 102 mm tall — standard S0 footprint that drops into existing panels without re-drilling. ## Switching Duty & What the Ratings Mean Switching frequency tells you the mechanical pace this contactor can sustain in a given duty class. At AC-3 (squirrel-cage motor starting) it's rated 750 operations per hour maximum; at AC-4 (inching/plugging) that drops to 250 1/h because the arc energy per cycle is higher. AC-1 resistive loads let it run at 1 000 1/h. For DC switching, the contactor carries 10 A at 24 V rated value, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V — these are the current limits per pole for DC-1/DC-3 style loads. The 3 hp rating at 230 V lines up with a typical small motor application. The spring-type terminals accept solid or stranded wire from 1 to 10 mm², or two conductors of 0.5 to 2.5 mm² each.","metaTitle":"Siemens 3RT2026-2DM40 SIRIUS Power Contactor, S0 Frame, Spri","metaDescription":"Siemens SIRIUS 3RT2026-2DM40 power contactor, size S0. Spring-type terminals, 3-pole. Rated AC-3 switching at 750 1/h. Current lifecycle product, quoted to order. Depth 107 mm.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"107 mm","Solid":"1 ... 10 mm²","Width":"45 mm","at DC":"15 ... 17.5 ms","Height":"102 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","Downwards":"10 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","Rated Value":"220 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","at AC-1 maximum":"1 000 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":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","Full-Scale Value":"1.1","at AC-3e maximum":"750 1/h","For Main Contacts":"18 ... 8","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S0","Solid Or Stranded":"2x (0.5 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Power 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 440 V rated value":"0.6 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","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","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"5.7 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","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (18 ... 8)","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"35.2 A","at AC-5b up to 400 V rated value":"20.7 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For 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":"5.9 W","closing power of magnet coil at DC":"5.9 W","holding power of magnet coil at DC":"5.9 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":"1.9 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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","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 %","Type Of Voltage Of The Control Supply Voltage":"DC","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 / P600","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)","minimum cross-section in main circuit at maximum AC-1 rated value":"10 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569333&mlfb=3RT2026-2DM40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2026-2DM40/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT2026-2DM40?","answer":"Submit an RFQ. Availability and current pricing are confirmed at quote time through our independent distribution network. No stock count or price is published here."},{"question":"Will 3RT2026-2DM40 drop into a panel specified around 3RT2015-1BW42 without rewiring?","answer":"Yes, both are S0 frame contactors with the same 45 mm width, 107 mm depth, and 35 mm DIN-rail mounting. The 3RT2026-2DM40 uses spring-type terminals instead of screw terminals, but the wire range (1–10 mm² solid/stranded) and pole count match, so no panel rework is needed."},{"question":"What is 3RT2026-2DM40's listed depth?","answer":"107 mm. Combined with a 45 mm width and 102 mm height, it occupies the standard S0 contactor envelope."},{"question":"What wire sizes does the spring terminal accept?","answer":"Solid or stranded wire from 1 to 10 mm², or two conductors of 0.5 to 2.5 mm² each. The spring-type terminals are on both the main contacts and the coil."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2026-2DM40","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/3RT2026-2DM40 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}}