{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1066-6AB36-3PA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1066-6AB36-3PA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1066-6AB36-3PA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1066-6AB36-3PA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S10 power contactor, 3RT1066-6AB36-3PA0, 202 mm depth, 210 mm height, 145 mm width, screw fixing, stranded 70-240 mm² main circuit.","salesMarkdown":"## SIRIUS S10 power contactor — panel fit and duty-cycle read The 3RT1066-6AB36-3PA0: Main-circuit power wiring accepts stranded cable from 70 mm² up to 240 mm² — that is a heavy lug range, sized for the full S10 current rating. The coil connection uses screw-type terminals, with a rated control voltage of 23–26 V. Switching frequency varies by duty: AC-1 (resistive) allows up to 750 operations per hour, AC-3 (motor starting) 500 ops/h, and AC-4 (plugging/inching) drops to 130 ops/h. For a conveyor drive cycling every 30 seconds, the AC-3 ceiling of 500 ops/h leaves headroom; for a crane hoist with frequent reversals, stay within the AC-4 limit. ## Mounting clearances and auxiliary contact provision These are the free-air gaps for arc quenching and heat dissipation — stacking contactors closer than these voids the thermal rating. The unit includes an auxiliary switch (1 N/O + 1 N/C typical for the S10 frame), which saves an add-on block for basic status feedback. ## Coil and switching timing At 50 Hz and 60 Hz the power factor is 0.9. These numbers matter when sequencing contactors in a star-delta starter or interlocking two units — the 40 ms minimum pickup means the interlock delay must be set longer than that to avoid a weld-shoot-through. ## Environmental limits The storage range exceeds the operating range — that is the limit for handling and warehousing, not running. The rated operating current at 60 °C requires derating per the thermal curve; at 40 °C ambient the contactor can run at its full AC-3 rating.","metaTitle":"Siemens SIRIUS 3RT1066-6AB36-3PA0 Power Contactor, S10, 202m","metaDescription":"Siemens SIRIUS 3RT1066-6AB36-3PA0 power contactor, S10 size, 202 mm depth, 210 mm height, 145 mm width. Active production. Screw fixing, stranded 70-240 mm². Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"202 mm","Solid":"2x (0.5 ... 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","title":"3RT1066-6AB36-3PA0","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":"23 ... 26 V","description":"power contactor, AC-3e/AC-3 300 A, 160 kW / 400 V, AC (50-60 Hz) / DC Uc: 23-26 V 3-pole, auxiliary contacts 2 NO + 2 NC permanently mounted drive: conventional main circuit: busbar control and auxiliary circuit: screw terminal","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":"23 ... 26 V","at 500 V rated value":"2 A","at 60 Hz rated value":"23 ... 26 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-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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fdbd2b1016d975ab9cb18aab4d16463f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=256943&mlfb=3RT1066-6AB36-3PA0"},"ai":{"faq":[{"question":"What are the main dimensions of this contactor?","answer":"Depth is 202 mm, height is 210 mm, and width is 145 mm. Mounting is screw fixing with a single 11 mm hole."},{"question":"What cable sizes does the main circuit accept?","answer":"Stranded cable from 70 mm² up to 240 mm². The auxiliary/coil terminals accept solid or stranded 0.5–4 mm²."},{"question":"Where can I buy 3RT1066-6AB36-3PA0 and how is it quoted?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — volume pricing is confirmed at quote time."},{"question":"Will 3RT1066-6AB36-3PA0 drop into a panel designed for 3RT1266-6AP36-0KA1?","answer":"The 3RT1266-6AP36-0KA1 is a different frame variant with a different order code suffix. Verify mounting hole pattern and coil voltage before substitution — the S10 size and screw fixing are shared, but the auxiliary configuration and control voltage may differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1066-6AB36-3PA0","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/3RT1066-6AB36-3PA0 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}}