{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1076-2AR36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1076-2AR36","canonicalUrl":"https://aoctrl.com/siemens/3RT1076-2AR36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1076-2AR36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, Size S12, 3RT1076-2AR36, 440-480 V AC coil, screw fixing, 225 mm depth, 214 mm height, 160 mm width, auxiliary switch included, spring-type coil terminals.","salesMarkdown":"## SIRIUS S12 Power Contactor — Panel Fit and Ratings The Siemens 3RT1076-2AR36 is a SIRIUS-brand Size S12 power contactor, screw-fixed to the mounting surface, with the coil rated for 440 to 480 V AC. It occupies 160 mm width, 214 mm height, and 225 mm depth — a substantial frame that needs a backplate with 11 mm mounting holes and a single-hole pattern. Coil pick-up threshold is 0.8 times the rated value. Magnet coil uses spring-type terminals. Mechanical life is typical 10,000,000 operations. ## Switching Capacity and Duty Cycles The 3RT1076-2AR36 carries auxiliary contacts rated at 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V — these are the signal-level ratings for the built-in auxiliary switch block. Maximum operating cycles per hour vary by duty: AC-1 (resistive) allows 500 ops/h, AC-3 (motor starting) allows 420 ops/h, AC-4 (plugging/inching) drops to 130 ops/h — the AC-4 figure is the one to watch for reversing or jogging applications. AC-3e (enhanced motor starting) also rates 420 ops/h, matching the standard AC-3 figure. Power factor at both 50 Hz and 60 Hz is 0.9, and the full-scale overload factor is 1.1 — meaning the contactor can handle 10% above its rated current for short durations. ## Wiring and Clearance Main circuit wiring accepts stranded conductors from 70 to 240 mm² — typical for a Size S12 contactor handling high motor currents. Auxiliary circuit terminals accept 2x (0.25 to 2.5 mm²) solid or stranded wire, spring-cage style, matching standard control wiring practice.","metaTitle":"Siemens 3RT1076-2AR36 SIRIUS Power Contactor, Size S12, 440-","metaDescription":"Siemens SIRIUS 3RT1076-2AR36 Size S12 power contactor, 440-480V AC coil, screw fixing, 225mm depth. Current lifecycle stage, sourced to order. Auxiliary switch included.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"225 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"160 mm","at AC":"60 ... 100 ms","at DC":"60 ... 100 ms","Height":"214 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":"440 ... 480 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Number Of Holes":"1","at AC-1 maximum":"500 1/h","at AC-2 maximum":"170 1/h","at AC-3 maximum":"420 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":"420 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":"S12","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":"477 A","at 50 Hz rated value":"440 ... 480 V","at 500 V rated value":"2 A","at 60 Hz rated value":"440 ... 480 V","at 600 V rated value":"472 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"250 kW","For Auxiliary Contacts":"24 ... 14","Width Of Connection Bar":"25 mm","For Main Current Circuit":"Connection bar","at 200/208 V rated value":"150 hp","at 220/230 V rated value":"200 hp","at 460/480 V rated value":"400 hp","at 575/600 V rated value":"500 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":"165 W","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"430 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":"536 A","at AC-5b up to 400 V rated value":"415 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 500 A (690 V, 100 kA), aM: 500 A (690 V, 50 kA), BS88: 500 A (415 V, 50 kA)","Without Load Current Share Typical":"10 W","closing power of magnet coil at DC":"920 W","holding power of magnet coil at DC":"10 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 630 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"55 W","for AWG cables for auxiliary contacts":"2x (24 ... 14)","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","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":"7 484 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"7 484 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"5 978 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"3 765 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"2 887 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":"370 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":"https://cdn.aoctrl.com/d3648b5141e3e33d1abdd527d31fd163.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=100957&mlfb=3RT1076-2AR36","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1076-2AR36/alternatives.json"},"ai":{"faq":[{"question":"What wire sizes does the 3RT1076-2AR36 accept on the main circuit?","answer":"The main circuit terminals accept stranded conductors from 70 to 240 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1076-2AR36","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/3RT1076-2AR36 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}}