{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1066-6AP36-3PA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1066-6AP36-3PA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1066-6AP36-3PA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1066-6AP36-3PA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S10, 220-240 VAC coil, screw fixing, 70-240 mm² main pole cable, 202 mm depth, 145 mm width, 210 mm height.","salesMarkdown":"Its main-pole cable range accepts 70 to 240 mm² stranded conductors, so it handles the high-current feed from a distribution bus or large motor branch. The magnet coil is rated 220-240 VAC, with screw-type terminals for the coil connection. Mounting is by screw fixing, not DIN rail — plan for four M8 bolts through 11 mm holes on a vertical surface, with ±90° rotation and ±22.5° tilt allowed. The contactor's maximum operating frequency varies sharply by duty class: 750 cycles per hour in AC-1 (resistive), 500/h in AC-3 (squirrel-cage motor start/run), and 130/h in AC-4 (plugging/inching). For AC-3e (enhanced motor switching) the limit is also 500/h. AC-2 (slip-ring motor) drops to 250/h. These are the thermal limits of the contactor's arc chamber and bimetallic strip — exceeding them in a given duty class shortens contact life. That means the contactor can handle fast cycling in a conveyor or pump start sequence, but not continuous inching at high rates. ## Auxiliary contact ratings and wiring The auxiliary contacts are rated: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V. These are the thermal current limits for the auxiliary circuit — use them for PLC inputs, status lamps, or interlocking relays. The auxiliary terminals accept solid or stranded conductors: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or max 2x 0.75-4 mm². The coil terminals are screw-type, so you'll need a screwdriver for both coil and auxiliary wiring. ## Mounting dimensions and clearances The contactor measures 210 mm high, 145 mm wide, and 202 mm deep. Mounting is by screw fixing through one 11 mm hole per pole — four bolts total. These are the arc-flash and cooling clearances; respect them to avoid tracking or thermal derating.","metaTitle":"Siemens 3RT1066-6AP36-3PA0 SIRIUS Power Contactor, Size S10,","metaDescription":"Siemens SIRIUS 3RT1066-6AP36-3PA0 power contactor, size S10, 220-240 VAC coil, screw fixing, 70-240 mm² main poles. Current lifecycle stage. Sourced to order against RFQ.","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":"220 ... 240 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":"220 ... 240 V","at 500 V rated value":"2 A","at 60 Hz rated value":"220 ... 240 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","Safety-Related Switching On":"Yes","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-2 at 400 V rated value":"160 kW","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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=654099&mlfb=3RT1066-6AP36-3PA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1066-6AP36-3PA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1066-6AP36-3PA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is 3RT1066-6AP36-3PA0's listed depth?","answer":"The depth is 202 mm."},{"question":"What conductor cross-sections does the auxiliary switch accept?","answer":"The auxiliary terminals accept solid or stranded conductors: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or max 2x 0.75-4 mm²."},{"question":"Will 3RT1066-6AP36-3PA0 drop into a panel that was specified around 3RT1266-6AP36-0KA1 without rewiring?","answer":"Both are size S10 SIRIUS contactors with the same mounting footprint and screw fixing pattern, so the mechanical fit is identical. The coil voltage and auxiliary wiring are the same — no rewiring needed for the panel layout. The main difference is the 3RT1266 variant includes an integrated electronic overload relay; the 3RT1066 does not, so you must add a separate overload relay in the motor branch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1066-6AP36-3PA0","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/3RT1066-6AP36-3PA0 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}}