{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1036-3XF40-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1036-3XF40-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1036-3XF40-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1036-3XF40-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1036-3XF40-0LA2 power contactor, size S2, 22 kW at 400 V AC-2, 11.4 kW at 690 V AC-3, screw-type terminals, 55 mm width.","salesMarkdown":"The key motor ratings are 22 kW at 400 V in AC-2 duty (slip-ring motor starting) and 11.4 kW at 690 V in AC-3 duty (squirrel-cage motor starting). The AC-3 figure at 690 V tells you it handles the higher-voltage motor circuits common in heavy industrial lines — pumps, conveyors, compressors — without needing a larger frame. Main circuit connections use screw-type terminals, accepting solid conductors 2x (0.25...2.5 mm²) and stranded conductors 2x (0.75...25 mm²). The terminal range covers control wiring up to motor power cables, so no adapter lugs are needed for typical panel builds. Dimensions are 55 mm wide, 142 mm high, and 130 mm deep. The 55 mm width is the S2 standard — it occupies three 18 mm module positions on a DIN rail, which matters when you're laying out a dense panel and counting TE per row. Clearance requirements: 10 mm upwards, downwards, forwards, and at the side. The wide cold-side tolerance (-40 °C) makes this suitable for unheated enclosures in northern climates or cold storage facilities. ## Switching performance and auxiliary contacts The contactor carries zero instantaneous auxiliary contacts (no built-in aux block). If you need feedback for a PLC or status indication, you'll add a separate auxiliary contact block to the front or side — factor that into your BOM line. Mechanical life is typical 10,000,000 operations. Electrical life varies by duty: 1,000,000 operations at AC-1 (resistive), 800,000 at AC-3 (motor), 400,000 at AC-2, and 300,000 at AC-4 (plugging/inching). Coil operating range: rated 110 V, with a pick-up voltage of 0.7 x rated (77 V) and a drop-out of 0.25 x rated (27.5 V). Operating times are 20...25 ms DC closing and 10...15 ms arcing. The 110 V coil suits European control circuits; verify your control transformer taps.","metaTitle":"Siemens SIRIUS 3RT1036-3XF40-0LA2 Power Contactor, S2, 22 kW","metaDescription":"Siemens SIRIUS 3RT1036-3XF40-0LA2 power contactor, size S2, 22 kW at 400 V AC-2, 11.4 kW at 690 V AC-3. Screw terminals, 55 mm wide. Current lifecycle stage. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"55 mm","at DC":"20 ... 25 ms","Height":"142 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"2x (0.75 ... 25 mm²)","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"110 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"400 1/h","at AC-3 maximum":"800 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Full-Scale Value":"1.25","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.75 ... 16 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 500 V rated value":"30 kW","at 690 V rated value":"11.4 kW","Instantaneous Contact":"0","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at maximum AC-1 rated value":"16 mm²","at AC-2 at 400 V rated value":"22 kW","at AC-4 at 400 V rated value":"41 A","Substance Prohibitance (Date)":"05/01/2012","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (18 ... 2)","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"fuse gL/gG: 80 A","closing power of magnet coil at DC":"15 W","holding power of magnet coil at DC":"11 W","With Type Of Coordination 1 Required":"fuse gL/gG: 160 A","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=421449&mlfb=3RT1036-3XF40-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1036-3XF40-0LA2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source — 3RT1044-1FB46?","answer":"The 3RT1044-1FB46 is a larger frame (S3 vs S2) with higher current ratings. It will not drop into a panel designed for the 3RT1036-3XF40-0LA2 without rewiring and re-spacing — the width, terminal sizing, and mounting footprint differ. Stick with the S2 frame for a direct fit."},{"question":"What is the depth of this contactor?","answer":"The depth is 130 mm. Combined with 55 mm width and 142 mm height, it fits standard 200 mm deep enclosures with clearance for wiring."},{"question":"What solid conductor sizes does it accept?","answer":"The main circuit screw terminals accept solid conductors 2x (0.25...2.5 mm²) and stranded 2x (0.75...25 mm²). This covers both control wiring and motor power cables."},{"question":"Will 3RT1036-3XF40-0LA2 drop into a panel specified around 3RT1044-1FB46?","answer":"No. The 3RT1044-1FB46 is an S3 frame with different dimensions and higher current ratings. The S2 frame of the 3RT1036-3XF40-0LA2 is physically smaller, so it would fit in the space, but the terminal sizing and electrical ratings are lower — you would need to verify the load current and re-terminate the wiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1036-3XF40-0LA2","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/3RT1036-3XF40-0LA2 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}}