{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1066-6AD36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1066-6AD36","canonicalUrl":"https://aoctrl.com/siemens/3RT1066-6AD36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1066-6AD36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S10 frame, 3RT1066-6AD36, 42-48 V AC/DC coil, screw-type terminals, 202 mm depth, 145 mm width, 210 mm height.","salesMarkdown":"## SIRIUS S10 Power Contactor — 42-48 V Coil, Screw Terminals The coil is rated for 42-48 V AC/DC, with a pickup threshold of 0.8 times the rated value — meaning it will reliably pull in at about 33.6 V and hold down to that level, giving you some margin on a sagging 48 V control supply. The main power circuit accepts stranded conductors from 70 mm² up to 240 mm² — that's a serious cable range for a contactor this size, covering everything from a 70 mm² motor feed to a 240 mm² bus tie. The coil terminals are screw-type, accepting 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) solid or stranded wire. ## Duty Class and Switching Frequency This contactor is rated for different maximum switching frequencies depending on the utilization category. In AC-3 duty (squirrel-cage motor starting), it's good for 500 operations per hour. In AC-4 duty (plugging/reversing/inching), that drops to 130 ops/hr. AC-1 (resistive) allows 750 ops/hr, and AC-2 (slip-ring motor) is 250 ops/hr. The AC-3e rating also sits at 500 ops/hr. The arcing time is 10-15 ms, and the operating time (both AC and DC) is 40-80 ms — that's the interval from coil energization to main contact closure. Mounting is via screw fixing with an 11 mm hole diameter. The contactor can be mounted on a vertical surface and rotated ±90°, or tilted forward/backward ±22.5°. That gives you some flexibility in panel layout — you're not locked into one orientation. The auxiliary switch is included (yes), and the mechanical endurance is a typical 10 million operations. ## Auxiliary Contact Ratings and Clearances The auxiliary contacts are rated at 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V. The overall dimensions are 210 mm height, 145 mm width, and 202 mm depth.","metaTitle":"Siemens 3RT1066-6AD36 SIRIUS Power Contactor, S10 Frame, 42-","metaDescription":"Siemens 3RT1066-6AD36 SIRIUS power contactor, S10 frame size, 42-48 V AC/DC coil, screw terminals. Rated for AC-3 switching at 500 ops/hr. Active production, sourced to order. Requ","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"202 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"145 mm","at AC":"40 ... 80 ms","at DC":"40 ... 80 ms","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":"42 ... 48 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-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 (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 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":"42 ... 48 V","at 500 V rated value":"2 A","at 60 Hz rated value":"42 ... 48 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":"18 ... 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":"screw-type 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":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 500 A (690 V, 100 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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","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":"$577.85","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=152125&mlfb=3RT1066-6AD36","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1066-6AD36/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT1066-6AD36?","answer":"The 3RT1266-6AP36-0KA1 is a peer in the same SIRIUS family with a similar S10 frame and coil voltage range, but it includes an electronic coil interface and additional auxiliary blocks. It will not drop into a panel wired for the 3RT1066-6AD36 without checking the auxiliary wiring and control voltage compatibility — the coil terminals and auxiliary contact arrangement differ."},{"question":"What wire sizes does the main power circuit accept?","answer":"The main power terminals accept stranded conductors from 70 mm² up to 240 mm²."},{"question":"How do I get current pricing and availability for 3RT1066-6AD36?","answer":"Submit an RFQ with your target quantity and delivery window. Pricing and availability are confirmed at quote time through independent distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1066-6AD36","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/3RT1066-6AD36 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}}