{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1066-2AV36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1066-2AV36","canonicalUrl":"https://aoctrl.com/siemens/3RT1066-2AV36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1066-2AV36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S10 frame, 3RT1066-2AV36, 380-420 VAC 50/60 Hz coil, spring-type coil terminals, screw fixing, 210 x 145 x 202 mm.","salesMarkdown":"## SIRIUS S10 power contactor — 3RT1066-2AV36 It carries a 380-420 VAC 50/60 Hz coil with spring-type terminals, and the main power poles accept stranded conductors from 70 up to 240 mm² — sized for higher-current distribution or large motor feeds. ## Duty-cycle and switching frequency The 3RT1066-2AV36 is rated for different maximum switching frequencies depending on the duty category: 750 operations per hour in AC-1 (resistive), 250 in AC-2, 500 in AC-3 and AC-3e, and 130 in AC-4 (high-inrush or plugging duty). For a motor-switching application on a conveyor or pump running AC-3 duty, the 500 ops/h ceiling means it can cycle about once every 7 seconds continuously — enough for most process cycles, but not for a rapid-reversing application that would push into AC-4 territory. ## Coil and auxiliary contact details The coil picks up at 0.8 x rated voltage (about 304 VAC minimum for the 380-420 VAC coil) and operates with a power factor of 0.9 at both 50 Hz and 60 Hz. The contactor includes an auxiliary switch block (rated 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V), which is useful for feedback to a PLC or for electrical interlocking without adding a separate auxiliary contactor. The coil itself uses spring-type terminals — no screwdriver needed for the coil wiring, which speeds up panel wiring and reduces the chance of loose connections on the control side. ## Physical envelope and clearances The contactor measures 210 mm high, 145 mm wide, and 202 mm deep — a substantial footprint that reflects the S10 frame's current-handling capacity. These are the distances to maintain for arc flash containment and cooling airflow; a panel layout that crams the contactor against the enclosure wall or another device risks derating or nuisance tripping. The mounting holes are 11 mm diameter, single hole per fixing point, consistent with standard M10 or 3/8\" hardware. ## Environmental limits and lifecycle status The 3RT1066-2AV36 operates in ambient temperatures from -25 °C to +60 °C and can be stored from -55 °C to +80 °C — the storage range is wider because the contactor is not dissipating heat or switching current while stored.","metaTitle":"Siemens 3RT1066-2AV36 SIRIUS Power Contactor, S10 Frame, 380","metaDescription":"Siemens 3RT1066-2AV36 SIRIUS power contactor, S10 frame, 380-420 VAC 50/60 Hz coil, spring-type coil terminals, screw fixing, 210x145x202 mm. Current lifecycle. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"202 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"145 mm","at AC":"40 ... 80 ms","at DC":"40 ... 80 ms","title":"3RT1066-2AV36","Height":"210 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"70 ... 240 mm²","at 50 Hz":"0.9","at 60 Hz":"0.9","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"380 ... 420 V","description":"power contactor, AC-3e/AC-3 300 A, 160 kW / 400 V, AC (50-60 Hz) / DC Uc: 380-420 V 3-pole, auxiliary contacts 2 NO + 2 NC drive: conventional main circuit: busbar control and auxiliary circuit: spring-loaded terminal","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Number Of Holes":"1","at AC-1 maximum":"750 1/h","at AC-2 maximum":"250 1/h","at AC-3 maximum":"500 1/h","at AC-4 maximum":"130 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing","Full-Scale Value":"1.1","at AC-3e maximum":"500 1/h","Diameter Of Holes":"11 mm","Mounting Position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back","Size Of Contactor":"S10","Solid Or Stranded":"2x (0,25 ... 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":"6 A","at 400 V rated value":"3 A","at 440 V rated value":"1.4 A","at 480 V rated value":"302 A","at 50 Hz rated value":"380 ... 420 V","at 500 V rated value":"2 A","at 60 Hz rated value":"380 ... 420 V","at 600 V rated value":"289 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"132 kW","For Auxiliary Contacts":"24 ... 14","Width Of Connection Bar":"25 mm","For Main Current Circuit":"Connection bar","at 200/208 V rated value":"100 hp","at 220/230 V rated value":"125 hp","at 460/480 V rated value":"250 hp","at 575/600 V rated value":"300 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","Thickness Of Connection Bar":"6 mm","at AC-3 rated value maximum":"1 000 V","at AC in hot operating state":"66 W","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"280 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"05/01/2012","Design Of The Surge Suppressor":"with varistor","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"290 A","at AC-5b up to 400 V rated value":"249 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 400 A (690 V, 100 kA), aM: 315 A (690 V, 50 kA), BS88: 400 A (415 V, 50 kA)","Without Load Current Share Typical":"7.4 W","closing power of magnet coil at DC":"650 W","holding power of magnet coil at DC":"7.4 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 500 A (690 V, 100 kA)","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"22 W","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.25 ... 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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"AC/DC","Limited To 1 S Switching At Zero Current Maximum":"5 524 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"4 579 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"3 153 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"1 883 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"1 445 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":"1 000 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":"500 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":"185 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6f26d278e899cd366805e3f2055f3f2e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=361739&mlfb=3RT1066-2AV36"},"ai":{"faq":[{"question":"What are the key dimensions and mounting clearances for 3RT1066-2AV36?","answer":"The contactor measures 210 mm high, 145 mm wide, and 202 mm deep. Minimum clearances are 10 mm upwards, 10 mm downwards, 10 mm at the sides, and 20 mm forwards. Mounting holes are 11 mm diameter."},{"question":"What coil voltage does 3RT1066-2AV36 use and what type are the coil terminals?","answer":"The coil is rated 380-420 VAC at 50/60 Hz with a pickup threshold of 0.8 x rated voltage. The coil terminals are spring-type, requiring no screwdriver for connection."},{"question":"Where can I buy 3RT1066-2AV36 and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Current availability and pricing are confirmed at the time of quotation — no stock or lead-time figures are published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1066-2AV36","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/3RT1066-2AV36 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}