{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2036-3XJ44-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2036-3XJ44-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT2036-3XJ44-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2036-3XJ44-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S2 contactor, 3RT2036-3XJ44-0LA2, DC coil with extended operating range, spring-type terminals, 55 mm width, 178 mm depth.","salesMarkdown":"The Siemens 3RT2036-3XJ44-0LA2 is a SIRIUS S2-size contactor with a DC coil featuring an extended operating range, terminated with spring-type terminals. The DC coil's extended operating range means it holds in across a wider voltage band than a standard coil — useful on lines with saggy 24 VDC supplies or long cable runs. ## Mounting & Panel Fit Width of 55 mm and depth of 178 mm; height is 114 mm. ## Coil & Switching Performance Rated coil voltage is 72 V DC. Switching times: DC closing time 30...55 ms, arcing time 10...20 ms. The contactor is rated for AC-4 duty at 250 operations per hour maximum — that's the plugging/reversing/inching duty class, so it handles frequent jogging on a conveyor or hoist. At 24 V DC the rated operational current for the main contacts is 6 A; at 48 V DC it's 2 A; at 110 V DC it's 1 A; at 220 V DC it's 0.3 A. These DC ratings are for resistive loads — if you're switching DC motors or solenoids, derate further or add a flyback diode. ## Environmental & Mechanical Life The contactor is rated for 10,000,000 mechanical operations typical, so it outlasts the machine in most cyclic applications.","metaTitle":"Siemens 3RT2036-3XJ44-0LA2 SIRIUS Contactor, 55 mm, Spring-T","metaDescription":"Siemens SIRIUS contactor 3RT2036-3XJ44-0LA2, S2 size, DC coil with extended operating range, spring-type terminals. Depth 178 mm, width 55 mm. Sourced to order; RFQ for current pri","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"178 mm","Width":"55 mm","at DC":"30 ... 55 ms","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"6 mm","Rated Value":"72 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Type Of Voltage":"DC","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"No","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","Full-Scale Value":"1.25","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":"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 480 V rated value":"52 A","at 500 V rated value":"2 A","at 600 V rated value":"52 A","at 690 V rated value":"1 A","Design Of The Product":"With extended operating range","Instantaneous Contact":"2","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","at AC-2 at AC-3e maximum":"600 1/h","Relative Humidity Minimum":"10 %","at maximum Ith rated value":"25 mm²","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at maximum AC-1 rated value":"25 mm²","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","Substance Prohibitance (Date)":"10/01/2014","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (18 ... 2), 1x (18 ... 1)","Duration Of Locked-Rotor Current":"230 ms","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","Product Function Bus 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":"1 W","closing power of magnet coil at DC":"23 W","holding power of magnet coil at DC":"1 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)","at AWG cables for auxiliary contacts":"2x (20 ... 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)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"No","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 %","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"2","Type Of Voltage Of The Control Supply Voltage":"DC","up to 40 °C according to IEC 60077 rated value":"70 A","up to 70 °C according to IEC 60077 rated value":"55 A","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)","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/e5e20d847691f14c883e297256820768.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=555873&mlfb=3RT2036-3XJ44-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2036-3XJ44-0LA2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT2036-3XJ44-0LA2?","answer":"The closest peer is the 3RT2037-1AL20-ZX95, which is also an S2-frame contactor but with a standard AC coil and screw terminals rather than the DC extended-range coil and spring terminals on this unit. Panel footprint is the same 55 mm width and 178 mm depth, so it drops into the same DIN rail slot without rewiring the main power circuit — but the coil circuit and termination method differ, so verify your control voltage and wiring preference before substituting."},{"question":"Where can I buy 3RT2036-3XJ44-0LA2 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for your target quantity and delivery window."},{"question":"Will 3RT2036-3XJ44-0LA2 drop into a panel built for 3RT2037-1AL20-ZX95?","answer":"Yes, the mounting footprint is identical — both are S2 size, 55 mm wide, 178 mm deep, and snap onto 35 mm DIN rail. The main power connections land in the same positions. However, the coil is DC with spring terminals on this unit versus AC with screw terminals on the 3RT2037-1AL20-ZX95, so the control wiring and coil supply must be adapted."},{"question":"What compliance documentation is available for 3RT2036-3XJ44-0LA2?","answer":"As a Siemens SIRIUS product, it carries CE marking for the European market and is designed to meet IEC/EN 60947-4-1 for contactors. RoHS and REACH declarations are standard from Siemens for this series. Specific UL/CSA file numbers should be confirmed against the nameplate marking on the unit you receive."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2036-3XJ44-0LA2","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/3RT2036-3XJ44-0LA2 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}}