{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1066-6AS36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1066-6AS36","canonicalUrl":"https://aoctrl.com/siemens/3RT1066-6AS36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1066-6AS36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S10, order code 3RT1066-6AS36, screw fixing, 202 mm depth, 210 mm height, 145 mm width.","salesMarkdown":"Screw fixing mounts it to a backplate or DIN-rail adapter plate; the 210 mm height, 145 mm width, and 202 mm depth mean you need to budget panel depth for the arc chamber and main pole connections, especially with the 70 to 240 mm² stranded cable it accepts on the line and load side. ## Switching duty and what the numbers mean The contactor is rated for AC-3 maximum 500 switching operations per hour — that's the motor-starting duty cycle (inductive load, full voltage). AC-4 (plugging/inching) drops to 130 ops/h; AC-1 (resistive) reaches 750 ops/h. The AC-3e rating also sits at 500 ops/h, matching the standard AC-3 figure. Arcing time runs 10 to 15 ms, with total make/break times of 40 to 80 ms on both AC and DC coils. That's a standard industrial contactor response — fast enough for most motor starts, not intended for high-speed synchronous transfer. Coil terminals are screw-type, rated for 2x 0.5 to 1.5 mm² solid or 2x 0.75 to 2.5 mm² stranded, max 2x 4 mm². Auxiliary switch is present on this variant, which saves ordering a separate side-mount block for basic status feedback. For BOM freeze or long-term planning, the SIRIUS Size S10 platform is stable; the contactor shares its footprint and mounting with other S10 variants, so a future coil-voltage or auxiliary-contact change won't force a panel re-layout. Main power cables: stranded 70 to 240 mm² — that's a substantial lug, typical for motor circuits above 100 A. The single 11 mm mounting hole per pole suggests bolted bus-bar or cable-lug connections, not spring terminals. These are the minimum free-air gaps for arc quenching and heat dissipation; tighter spacing forces derating of the switching frequency. The 60 °C ceiling is standard for panel-mounted contactors — derate the AC-3 switching frequency above 40 °C per the thermal curve.","metaTitle":"Siemens 3RT1066-6AS36 SIRIUS Power Contactor, Size S10, 202","metaDescription":"Siemens 3RT1066-6AS36 SIRIUS power contactor, Size S10. Rated for AC-3 500 ops/h. Screw fixing, 70-240 mm² cable. Current lifecycle. Quoted 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":"500 ... 550 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":"500 ... 550 V","at 500 V rated value":"2 A","at 60 Hz rated value":"500 ... 550 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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=309228&mlfb=3RT1066-6AS36","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1066-6AS36/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1066-6AS36?","answer":"The 3RT1266-6AP36-0KA1 is a peer in the SIRIUS family with similar Size S10 frame and AC-3 ratings, but check the coil voltage and auxiliary configuration — the 3RT1066-6AS36 uses screw-type coil terminals and includes an auxiliary switch, which may differ on the peer."},{"question":"Where can I buy 3RT1066-6AS36 and how is it quoted?","answer":"This part is sourced 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 on this SIRIUS Size S10 contactor."},{"question":"What are the mounting clearances for 3RT1066-6AS36?","answer":"Minimum free-air gaps: 10 mm upwards, 20 mm forwards, 10 mm downwards, 10 mm at the side. These are required for arc quenching and thermal management at full rated switching frequency."},{"question":"What compliance documentation does Siemens provide for 3RT1066-6AS36?","answer":"Siemens SIRIUS contactors typically carry CE, UL, CSA, and CCC certifications, plus RoHS and REACH declarations. Specific documentation for this order code is available on request with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1066-6AS36","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/3RT1066-6AS36 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}}