{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1XF40-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1XF40-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1XF40-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1XF40-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 3RT1035-1XF40-0LA2, 110 V AC coil, screw-type terminals, 22 kW at 500 V AC-3, 55 mm width.","salesMarkdown":"## SIRIUS S2 Power Contactor with 110 V AC Coil The coil is rated for 110 V AC, picking up at 70% of rated voltage and dropping out at 125% of rated value. ## Motor Switching Capacity and Duty Cycles This contactor is rated for 22 kW at 500 V in AC-3 duty (standard motor switching) and 11.4 kW at 690 V. For AC-2 duty (slip-ring motor starting) at 400 V, it handles 18.5 kW. Switching frequency varies by duty: up to 1 200 operations per hour for AC-1 resistive loads, 1 000/h for AC-3 motor loads, 600/h for AC-2, and 300/h for AC-4 (plugging/inching). ## Auxiliary and DC Switching Capability The contactor carries zero instantaneous auxiliary contacts (no built-in aux), so any auxiliary switching requires a separate add-on block. For DC loads, it is rated at 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — these are the maximum breaking currents for DC circuits, which are significantly lower than AC ratings due to arc extinction characteristics. Main circuit connections use screw-type terminals. Solid conductors: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded conductors: 2x (0.75 to 25 mm²). For the main circuit at maximum AC-1 rating, the terminal accepts up to 16 mm². Solid or stranded combinations: 2x (0.75 to 16 mm²). These ranges cover typical panel wiring from control to power circuits. ## Physical Dimensions and Mounting Clearances Dimensions: 55 mm width, 142 mm height, 130 mm depth. Side-by-side mounting is permitted, which saves panel space. The 55 mm width is the standard S2 footprint — check your panel layout against this dimension.","metaTitle":"Siemens SIRIUS 3RT1035-1XF40-0LA2 Power Contactor, S2, 110 V","metaDescription":"Siemens SIRIUS 3RT1035-1XF40-0LA2 power contactor, size S2, 110 VAC coil, 22 kW at 500 V AC-3. Screw terminals, DIN rail mount. 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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 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":"1 200 1/h","at AC-2 maximum":"600 1/h","at AC-3 maximum":"1 000 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":"22 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":"18.5 kW","at AC-4 at 400 V rated value":"35 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":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"fuse gL/gG: 63 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: 125 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","Finely Stranded Without Core End Processing":"2x (0.75 ... 16 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=185047&mlfb=3RT1035-1XF40-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1XF40-0LA2/alternatives.json"},"ai":{"faq":[{"question":"What are the main circuit termination details for this contactor?","answer":"Screw-type terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded: 2x (0.75 to 25 mm²). Max AC-1 termination: 16 mm²."},{"question":"What is the physical size of this contactor?","answer":"Width 55 mm, height 142 mm, depth 130 mm. Side-by-side mounting is allowed. Required clearances: 10 mm in all directions (up, down, forward, side)."},{"question":"What motor power can this contactor switch?","answer":"22 kW at 500 V AC-3 (standard motor switching), 11.4 kW at 690 V AC-3, and 18.5 kW at 400 V AC-2 (slip-ring motor starting)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1XF40-0LA2","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/3RT1035-1XF40-0LA2 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}}