{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1066-2NP36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1066-2NP36","canonicalUrl":"https://aoctrl.com/siemens/3RT1066-2NP36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1066-2NP36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, S10 frame, 3RT1066-2NP36, 200-277 V AC coil, spring-type terminals, screw fixing, 145 mm width, 210 mm height, 202 mm depth.","salesMarkdown":"The Siemens 3RT1066-2NP36 is a SIRIUS S10-frame power contactor rated for a 200-277 V AC coil. The dropout threshold is 0.8 × rated value. The S10 frame size handles the main power circuit through stranded terminals accepting 70-240 mm² — that is a heavy cable range suited for motor feeders in the 100-200 A class. The control circuit uses spring-type terminals (2× 0.25-2.5 mm² solid or stranded), so you can land the coil wires without a screwdriver. Mounting is screw fixing on a vertical surface, rotatable ±90° and tiltable ±22.5° front-to-back, which gives panel builders flexibility in tight enclosures. Clearance distances: 10 mm upwards, downwards, and to the side; 20 mm forwards — plan your DIN-rail or backplate layout accordingly. ## Duty-cycle capability and switching frequency Switching frequency is duty-dependent: 750 cycles/hour in AC-1 (resistive loads), 500 in AC-3 and AC-3e (squirrel-cage motors, normal starting), 250 in AC-2 (slip-ring motors), and 130 in AC-4 (plugging/inching). For a conveyor drive running AC-3 duty at 500 ops/h, that is one start every 7.2 seconds — adequate for most material-handling lines. ## Auxiliary contact ratings and timing The auxiliary switch is rated 10 A at 24 V, 2 A at 48 V and 60 V, and 1 A at 110 V — these are the maximum continuous currents the aux contacts can break. Use them for PLC inputs or small relay coils; watch the voltage derating above 24 V. Arcing time is 10-15 ms. That gives you a predictable dropout sequence for interlocking circuits. ## Environmental range and lifecycle For a critical spare holding on a legacy SIRIUS install, this part is still in the active catalog. No official successor has been published, so the 3RT1066-2NP36 is the direct replacement for itself — no cross-reference guesswork needed. As a Siemens SIRIUS product, the contactor carries the manufacturer's standard compliance documentation. Specific certificate copies are available on request with the RFQ.","metaTitle":"Siemens SIRIUS 3RT1066-2NP36 Power Contactor, S10 Frame, 200","metaDescription":"Siemens SIRIUS 3RT1066-2NP36 power contactor, S10 frame, 200-277 V AC coil, spring-type terminals, screw fixing. 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 (0.25 ... 2.5 mm²)","Width":"145 mm","at AC":"80 ... 100 ms","at DC":"80 ... 100 ms","title":"3RT1066-2NP36","Height":"210 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"70 ... 240 mm²","at 50 Hz":"0.4","at 60 Hz":"0.4","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"200 ... 277 V","description":"power contactor, AC-3e/AC-3 300 A, 160 kW / 400 V, AC (50-60 Hz) / DC Uc: 200-277 V PLC input 24 V DC 3-pole, auxiliary contacts 2 NO + 2 NC drive: electronic 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":"200 ... 277 V","at 500 V rated value":"2 A","at 60 Hz rated value":"200 ... 277 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":"3.4 W","closing power of magnet coil at DC":"580 W","holding power of magnet coil at DC":"3.4 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","voltage at PLC-control input rated value":"24 V","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","type of PLC-control input according to IEC 60947-1":"Type 2","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","operating range factor of the voltage at PLC-control input":"0.8 ... 1.1","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/e464da32266f228c2f772d580b1ab7db.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=326603&mlfb=3RT1066-2NP36"},"ai":{"faq":[{"question":"What is the depth of 3RT1066-2NP36?","answer":"The depth is 202 mm. Combined with the 145 mm width and 210 mm height, this is the S10 frame envelope — plan your enclosure depth accordingly, especially with the 20 mm forward clearance requirement."},{"question":"What wire sizes does the control circuit accept?","answer":"The spring-type control terminals accept 2× 0.25-2.5 mm² solid or stranded. The main power terminals accept stranded 70-240 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1066-2NP36","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/3RT1066-2NP36 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}}