{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2036-1NB34","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2036-1NB34","canonicalUrl":"https://aoctrl.com/siemens/3RT2036-1NB34","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2036-1NB34","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2036-1NB34, S2-size power contactor, 20-33 V AC/DC coil, screw-type terminals, 55 mm wide, 174 mm deep, for screw and snap-on 35 mm DIN rail mounting.","salesMarkdown":"The coil accepts 20 to 33 V AC or DC, drawing 2 VA at both 50 Hz and 60 Hz, with an inrush current peak of 3 A. That 20-33 V range means it holds in on a nominal 24 V control supply and stays pulled in through dips down to 20 V — useful if your DC bus sags under heavy load. The S2 frame carries the main contact rating for this class. The contactor is sized for typical motor switching duty; the operating cycles per hour vary by duty class: up to 1 000 cycles/h at AC-1 (resistive), 800 cycles/h at AC-3 (squirrel-cage motor starting), and 250 cycles/h at AC-4 (plugging/inching). For a conveyor or pump starting under AC-3, the 800 cycles/h ceiling is generous enough for most cyclic applications. Main contact configuration is 3-pole, with 1 normally open and 1 normally closed auxiliary contact built in (18 to 1 numbering). No separate auxiliary switch block is needed for basic feedback — the integrated aux pair handles status indication to a PLC input. Wire termination uses screw-type terminals on the coil and main contacts, accepting 2 x (0.5 to 1.5 mm²) or 2 x (0.75 to 2.5 mm²) solid or stranded. That covers common control and power wiring sizes without needing pin ferrules, though ferrules are fine for stranded. Dimensions are 55 mm wide, 114 mm high, and 174 mm deep. The 55 mm width is a single modular unit on a DIN rail — it occupies one standard slot, so panel space budgeting is straightforward. The closest functional peer within the same SIRIUS S2 family is the 3RT2037-1AF00-ZX95, which shares the same frame size and mounting footprint. The primary difference is the coil voltage — the 3RT2037-1AF00-ZX95 uses a different coil range. If your control voltage is fixed at 24 V DC, the 3RT2036-1NB34 with its 20-33 V coil is the direct fit; the 3RT2037 variant would require a coil voltage check before substitution.","metaTitle":"Siemens 3RT2036-1NB34 SIRIUS Power Contactor, 20-33 V Coil,","metaDescription":"Siemens SIRIUS 3RT2036-1NB34 power contactor, S2 frame. 20-33 V AC/DC coil, screw terminals, 55 mm wide. Active production. Sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"174 mm","Width":"55 mm","at AC":"30 ... 55 ms","at DC":"30 ... 55 ms","title":"3RT2036-1NB34","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"2 VA","at 60 Hz":"2 VA","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"6 mm","Rated Value":"20 ... 33 V","description":"power contactor, AC-3e/AC-3, 51 A, 22 kW / 400 V, 3-pole, 20-33 V AC/DC, 50/60 Hz, with integrated varistor, auxiliary contacts: 2 NO + 2 NC, screw terminal, size: S2, removable auxiliary switch","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-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":"No","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","Full-Scale Value":"1.1","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 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"3 A","Product Designation":"Power contactor","at 24 V rated value":"6 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":"20 ... 33 V","at 500 V rated value":"2 A","at 60 Hz rated value":"20 ... 33 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","Locked-Rotor Current Peak":"2.6 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"40 mA","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","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"1 A","Duration Of Locked-Rotor Current":"230 ms","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":"screw-type 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":"2 W","closing power of magnet coil at DC":"23 W","holding power of magnet coil at DC":"1 W","At Contactor For Auxiliary Contacts":"Screw-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)","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"4 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","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC/DC","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 / Q600","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":"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/55be3b66c9b4f63f0424bda8078509b6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=68240&mlfb=3RT2036-1NB34"},"ai":{"faq":[{"question":"What is the closest functional second-source to the 3RT2036-1NB34?","answer":"The 3RT2037-1AF00-ZX95 is the closest peer within the same SIRIUS S2 frame family. It shares the same physical footprint and mounting but uses a different coil voltage range, so verify your control supply before substituting."},{"question":"What are the key dimensions of the 3RT2036-1NB34?","answer":"Width is 55 mm, height is 114 mm, and depth is 174 mm. The 55 mm width occupies one standard DIN-rail slot."},{"question":"What coil voltage does the 3RT2036-1NB34 require?","answer":"The coil is rated for 20 to 33 V AC or DC. At 24 V rated value, the holding current draw is 6 A inrush peak, and steady-state power consumption is 2 VA at both 50 Hz and 60 Hz."},{"question":"Will the 3RT2036-1NB34 drop into a panel designed for the 3RT2037-1AF00-ZX95 without rewiring?","answer":"Mechanically yes — both are S2 frame contactors with the same mounting footprint on 35 mm DIN rail. Electrically, the coil voltage differs, so the control wiring must match the 20-33 V coil of the 3RT2036-1NB34. If the panel was wired for a different coil voltage, the coil circuit needs verification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2036-1NB34","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/3RT2036-1NB34 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}}