{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2036-1KB40-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2036-1KB40-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT2036-1KB40-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2036-1KB40-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, coupling contactor, size S2, 3RT2036-1KB40-1AA0, 24 VDC coil, 10 A DC-13, screw terminals, 55 mm width.","salesMarkdown":"## Siemens SIRIUS 3RT2036-1KB40-1AA0 – DC Coupling Contactor, Size S2 Rated for DC-13 duty, the main contacts switch 10 A at 24 V, 2 A at 48 V, and 2 A at 60 V — typical for solenoid and electromagnetic brake loads in machine tools and packaging lines. The coil draws a 2.6 A inrush peak and holds at 24 V with a 0.8 A initial value, settling to a 1.2 A full-scale holding current. That inrush matters for a 24 VDC power supply budget if several contactors pull in simultaneously. Dimensions are 55 mm wide, 114 mm high, 130 mm deep. The width matches the S2 footprint, so it occupies three 18 mm modular positions on the DIN rail — standard for a contactor this size. That side clearance is tighter than the vertical; plan gland-plate entry and wire bending radius accordingly. Screw terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded copper. The magnet coil termination uses the same screw-type terminals, so no separate coil connector is needed. Mounting position is standing on a horizontal surface; derating for side or inverted mounting is not specified here, so stick to the upright orientation. ## Switching Performance and Lifecycle The main contact configuration is 18 normally open and 1 normally closed — that is a 3-pole NO plus one NC auxiliary integrated into the main contact block, not a separate add-on. The auxiliary switch is included as standard.","metaTitle":"Siemens SIRIUS 3RT2036-1KB40-1AA0 Coupling Contactor, S2, 24","metaDescription":"Siemens SIRIUS 3RT2036-1KB40-1AA0 coupling contactor, size S2, 24 VDC coil, 10 A DC-13 switching capacity. Screw terminals, DIN rail mount. Current lifecycle stage: active. Sourced","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":"0.8","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":"Yes","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":"1.2","at AC-3e maximum":"800 1/h","For Main Contacts":"18 ... 1","Mounting Position":"standing, on horizontal 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":"2.6 A","Product Designation":"Coupling 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 500 V rated value":"2 A","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":"2.1 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":"0.9 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":"1 W","closing power of magnet coil at DC":"21.5 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)","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 ... 16), 2x (18 ... 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), 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":"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 / 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":"$133.35","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5d940f7ad795e6653f6dc7e08959b881.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=578156&mlfb=3RT2036-1KB40-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2036-1KB40-1AA0/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT2036-1KB40-1AA0 drop into a panel specified for 3RT2036-1AC20-ZX95?","answer":"Not without verifying the coil voltage. The -1KB40-1AA0 has a 24 VDC coil, while the -1AC20-ZX95 is an AC-coil variant. The physical footprint (S2 size, 55 mm width) and DIN rail mounting are the same, but the coil supply must match."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2036-1KB40-1AA0","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/3RT2036-1KB40-1AA0 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}}