{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2036-3AC20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2036-3AC20","canonicalUrl":"https://aoctrl.com/siemens/3RT2036-3AC20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2036-3AC20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 3RT2036-3AC20, 52 A at 480 V, 24 V 50 Hz coil, spring-type terminals, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"It's rated for 52 A at 480 V and carries a 24 V 50 Hz coil. The coil connection uses spring-type terminals, which cuts down on screw-torque checks during panel build-out. This contactor handles a mechanical life of 10,000,000 operations typical. That's the number that governs the real-world fit for most motor control applications. The 10 hp rating at 230 V gives a quick reference for North American panel builders matching to motor nameplates. Switching rates vary by duty: AC-1 (resistive) allows up to 1000 operations per hour, AC-3 (motor running) up to 800 per hour, and AC-4 (plugging/inching) drops to 250 per hour. If your application involves frequent reversing or jogging, the AC-4 rate is the limiting factor for thermal rise in the main contacts. Its contact ratings span from 10 A at 24 V down to 0.3 A at 220 V, so you can match the control voltage without derating surprises. This S2-size contactor measures 55 mm wide, 114 mm high, and 130 mm deep. These aren't just suggestions — they keep arc flash and heat dissipation from cooking adjacent components. Wire size for the main terminals accepts 2x (0.5 to 2.5 mm²) solid or stranded. The coil draws power factor values of 0.36 at 50 Hz and 0.39 at 60 Hz. That's the phase angle between voltage and current — not a number you'll use daily, but relevant if you're sizing a control transformer for a bank of contactors. The closest functional peer is the 3RT2037-1AF00-ZX95, but that variant carries different coil voltage and terminal options. The 3RT2036-3AC20 with its 24 V 50 Hz coil and spring-type terminals is a specific configuration; a panel built around it won't accept the 3RT2037-1AF00-ZX95 without rewiring the coil circuit. Verify coil voltage and terminal type before substituting.","metaTitle":"Siemens 3RT2036-3AC20 SIRIUS Power Contactor, 52 A at 480 V,","metaDescription":"Siemens SIRIUS 3RT2036-3AC20 power contactor, size S2. Rated 52 A at 480 V, 24 V 50 Hz coil. Spring-type terminals. Screw and snap-on 35 mm DIN rail mount. Current lifecycle stage.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Width":"55 mm","at AC":"10 ... 18 ms","title":"3RT2036-3AC20","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.36","at 60 Hz":"0.39","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"6 mm","description":"power contactor, AC-3e/AC-3, 51 A, 22 kW / 400 V, 3-pole, 24 V AC, 50/60 Hz, auxiliary contacts: 1 NO + 1 NC, main circuit: screw terminal, control and auxiliary circuit: spring-loaded terminal, size: S2","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"600 1/h","at AC-3 maximum":"800 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","at AC-3e maximum":"800 1/h","For Main Contacts":"18 ... 1","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.5 ... 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":"10 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"52 A","at 50 Hz rated value":"24 V","at 500 V rated value":"2 A","at 60 Hz rated value":"24 V","at 600 V rated value":"52 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"3 hp","at 200/208 V rated value":"15 hp","at 220/230 V rated value":"15 hp","at 460/480 V rated value":"40 hp","at 575/600 V rated value":"50 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"12 W","at AC-2 at 400 V rated value":"22 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"41 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2014","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"61.6 A","at AC-5b up to 400 V rated value":"41.5 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 80A (690V,100kA), aM: 50A (690V,100kA), BS88: 63A (415V,80kA)","Without Load Current Share Typical":"17.2 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 160 A (690 V, 100 kA), aM: 80 A (690 V, 100 kA), BS88: 125 A (415 V, 80 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"4 W","for AWG cables for auxiliary contacts":"2x (20 ... 14)","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 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","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC","Limited To 1 S Switching At Zero Current Maximum":"937 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"697 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"468 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"282 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"229 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 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":"690 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":"25 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","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/8235bd234ecb7e389f00caa6ef1d9c9a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=432066&mlfb=3RT2036-3AC20"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"Width is 55 mm, height is 114 mm, and depth is 130 mm. Clearances required: 10 mm up, down, and forward, and 6 mm at the side."},{"question":"What is the maximum switching rate for motor loads?","answer":"For AC-3 duty (motor running), the maximum is 800 operations per hour. For AC-4 duty (plugging/inching), it drops to 250 per hour."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2036-3AC20","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/3RT2036-3AC20 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}}