{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2036-3XB40-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2036-3XB40-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT2036-3XB40-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2036-3XB40-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, contactor, size S2, 24 V DC coil, spring-type terminals, 52 A at 480 V, 130 mm depth, 55 mm width, 114 mm height.","salesMarkdown":"## SIRIUS 3RT2036-3XB40-0LA2 — 24 V DC Contactor, Size S2, Spring-Terminal It carries a 52 A rated operational current at both 480 V and 600 V, and is rated for 10 hp at 230 V — so it handles motor loads up to that power class on a 230 V line. The DC coil draws a 3 A inrush peak, with a holding current of 0.7 A at 24 V nominal. Dropout time on DC is 30 to 55 ms, and arcing time runs 10 to 20 ms, which matters for contactor coordination in a motor starter. ## Ratings and Switching Capacity For DC switching, the contactor is rated at 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. These DC ratings are per pole — useful for switching DC loads like solenoids or DC motor brakes. The AC-4 maximum switching frequency is 250 operations per hour, which sets a ceiling for heavy-duty jogging or inching applications. The main contacts are 3-pole (3 NO). An auxiliary switch is built in. The contactor carries a typical mechanical life of 10 million operations, per the datasheet. Spring-type terminals accept 2 x (0.5 to 2.5 mm²) solid or stranded wire. This is a tool-less termination — strip to the correct length and push in. No screw torque to verify, which saves time on repetitive panel wiring.","metaTitle":"Siemens 3RT2036-3XB40-0LA2 SIRIUS Contactor, 24 V DC, 52 A a","metaDescription":"Siemens SIRIUS 3RT2036-3XB40-0LA2 contactor, size S2, 24 V DC coil, spring-type terminals, 52 A at 480 V. Current lifecycle. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"130 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":"24 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":"Yes","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","Inrush Current Peak":"3 A","Product Designation":"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 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":"1","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","Locked-Rotor Current Peak":"2.6 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"40 mA","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","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"1 A","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":"1","number of NO contacts for auxiliary contacts":"1","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 / 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)","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/d6ba0ae33f58832ea3a75d0f4473687f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=30618&mlfb=3RT2036-3XB40-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2036-3XB40-0LA2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT2036-3XB40-0LA2?","answer":"The 3RT2037-1AL20-ZX95 is a peer in the same SIRIUS size S2 family, but with different coil voltage and terminal type. Verify coil compatibility before substituting — this unit uses a 24 V DC coil with spring terminals, while the peer may differ. The physical footprint (130 mm depth, 55 mm width, 114 mm height) and DIN-rail mounting are shared, so it can drop into the same panel cutout if the coil voltage matches."},{"question":"Where can I buy 3RT2036-3XB40-0LA2 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution channels. Submit an RFQ with your quantity and target delivery date; availability and current pricing are confirmed at quote time."},{"question":"What are the key dimensions of 3RT2036-3XB40-0LA2?","answer":"Depth is 130 mm, width is 55 mm, height is 114 mm. These dimensions match the SIRIUS size S2 footprint."},{"question":"What compliance documentation does Siemens provide for this contactor?","answer":"As a SIRIUS product, it carries CE marking and is designed to meet IEC/EN 60947-4-1 standards. RoHS and REACH compliance declarations are available from Siemens documentation. The DIN-rail mounting conforms to DIN EN 60715."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2036-3XB40-0LA2","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/3RT2036-3XB40-0LA2 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}}