{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1076-2AV36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1076-2AV36","canonicalUrl":"https://aoctrl.com/siemens/3RT1076-2AV36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1076-2AV36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S12, 3RT1076-2AV36, 380-420 VAC coil, screw fixing, spring-type coil terminals, auxiliary switch included, 225 mm depth, 214 mm height, 160 mm width.","salesMarkdown":"## SIRIUS S12 Power Contactor — 3RT1076-2AV36 Rated coil voltage is 380-420 VAC, with a pick-up threshold of 0.8 x rated value and a drop-out at 1.1 x rated value — meaning it holds in during brownouts down to about 304 VAC and releases cleanly above 462 VAC. Opening time is 60-100 ms on both AC and DC supplies, with an arcing time of 10-15 ms, so the contactor clears faults fast enough for most motor branch circuits without nuisance tripping upstream. The main power terminals accept stranded conductors from 70 to 240 mm² — that's a 4/0 AWG to 500 kcmil range — so it handles the heavy feed for a large motor or a resistive bank. The coil terminals use spring-type cages accepting 2x (0.25-2.5 mm²) solid or stranded, which speeds wiring on the control side. ## Duty Ratings and Switching Frequency This contactor is rated for multiple duty classes, and the switching frequency tells you which application it fits. At AC-1 (resistive loads) it manages up to 500 operations per hour; at AC-3 (squirrel-cage motors, starting and disconnecting running) it's 420 ops/h; at AC-4 (plugging, inching, reversing) it drops to 130 ops/h. The AC-3e rating (enhanced AC-3 for electronic motor protection) also sits at 420 ops/h. Auxiliary contacts are built in, rated at 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V — these cover typical PLC input sensing or relay coil control without an add-on block. Mechanical life is quoted at 10 million operations typical, so it outlasts most panel refreshes. Physical footprint: 225 mm deep, 214 mm high, 160 mm wide. Mounting clearance: 10 mm upwards, 10 mm downwards, 20 mm forwards, 10 mm at the sides — so it needs about 245 mm of enclosure depth and 234 mm of height. The single 11 mm mounting hole suggests a bolt-through pattern rather than a DIN-rail clip; plan for screw-fixing hardware. Operating temperature range is -25 to +60 °C, storage from -55 to +80 °C — fine for unheated plant rooms but check derating above 40 °C if you're pushing the switching frequency limits. Power factor at 50/60 Hz is 0.9, typical for a large AC coil.","metaTitle":"Siemens 3RT1076-2AV36 SIRIUS Power Contactor, Size S12, 380-","metaDescription":"Siemens 3RT1076-2AV36 SIRIUS power contactor, Size S12, 380-420 VAC coil, screw fixing, spring-type coil terminals, auxiliary switch included. Current lifecycle stage. Available to","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":"380 ... 420 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":"380 ... 420 V","at 500 V rated value":"2 A","at 60 Hz rated value":"380 ... 420 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/855b95bf703380a4a91f6cc983a632e4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=120480&mlfb=3RT1076-2AV36","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1076-2AV36/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of the 3RT1076-2AV36?","answer":"Depth is 225 mm, height is 214 mm, width is 160 mm. Mounting clearances: 10 mm up, 10 mm down, 20 mm forward, 10 mm to the sides."},{"question":"What wire sizes does the 3RT1076-2AV36 accept?","answer":"Main power terminals accept stranded conductors from 70 to 240 mm². Coil terminals use spring-type cages accepting 2x (0.25 to 2.5 mm²) solid or stranded."},{"question":"Where can I buy the 3RT1076-2AV36 and how is it quoted?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1076-2AV36","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/3RT1076-2AV36 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}}