{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1AK64","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1AK64","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1AK64","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AK64","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 3RT1035-1AK64, 110 V 50 Hz / 120 V 60 Hz coil, screw terminals, 18.5 kW at AC-2 400 V, snap-on 35 mm DIN rail.","salesMarkdown":"It carries a 110 V 50 Hz / 120 V 60 Hz coil and is rated for AC-2 duty at 18.5 kW at 400 V, making it suited for slip-ring motor or moderate-duty induction motor applications. The operating range spans 0.8 to 1.1 times the rated voltage at both 50 Hz and 60 Hz, so the coil holds in reliably even if line voltage dips 20 %. Operating time at AC is 7 to 20 ms, with arcing time between 10 and 15 ms — tight enough for coordinated motor starter assemblies without excessive contact wear. For standard squirrel-cage motors (AC-3), the contactor is rated 22 kW at 500 V, and for plugging or inching duty (AC-4) it handles 11.4 kW at 690 V. These three duty ratings let you size the contactor to the exact motor category without over-specifying. Mechanical life is 10 million operations typical, with maximum switching rates of 1 200 cycles/hour in AC-1 (resistive), 1 000 in AC-3, and 300 in AC-4. The AC-4 rate is the limiting factor for reversing or jogging applications — if your cycle rate exceeds 300/h, the contactor will wear prematurely. Auxiliary contact ratings cover both AC and DC control circuits: 10 A at 24 V DC, 2 A at 60 V DC, 1 A at 110 V DC, and 0.3 A at 220 V DC, plus 6 A at 230 V AC and 3 A at 400 V AC. These are the limits for pilot devices, PLC inputs, or relay coils wired through the auxiliary block. For a BOM line that needs this exact coil voltage (110 V 50 Hz / 120 V 60 Hz) and size S2 frame, the 3RT1035-1AK64 is the direct fit. Sourcing is straightforward through the usual Siemens industrial controls supply chain. Dimensions are 112 mm high, 55 mm wide, and 164 mm deep. Main circuit terminals are screw-type, accepting solid wires from 0.5 to 4 mm² (2 conductors per terminal) and stranded wires from 0.75 to 25 mm². The control circuit accepts 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, with a maximum of 2x 4 mm² solid. This range covers most panel wiring from signal-level to motor feeders. The -25 °C lower limit is fine for most indoor industrial panels; if the panel sits in an unheated space below freezing, the contactor still operates.","metaTitle":"Siemens 3RT1035-1AK64 SIRIUS Power Contactor, 110 V 50 Hz /","metaDescription":"Siemens SIRIUS 3RT1035-1AK64 power contactor, size S2, 110 V 50 Hz / 120 V 60 Hz coil, 18.5 kW at AC-2 400 V, screw terminals, snap-on DIN rail, current active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"164 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"55 mm","at AC":"7 ... 20 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.8 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","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":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.75 ... 16 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","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 50 Hz rated value":"110 V","at 500 V rated value":"22 kW","at 60 Hz rated value":"120 V","at 690 V rated value":"11.4 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","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","at 40 °C minimum permissible":"16 mm²","at 60 °C minimum permissible":"16 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"22 kW","at 690 V at 60 °C rated value":"66 kW","at AWG cables for main contacts":"2x (18 ... 2)","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","Surge Voltage Resistance Rated Value":"6 kV","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Thermal Short-Time Current Limited To 10 S":"400 A","Finely Stranded Without Core End Processing":"2x (0.75 ... 16 mm²)","apparent holding power of magnet coil at AC":"12.6 VA","apparent pick-up power of magnet coil at AC":"166 VA","Type Of Voltage Of The Control Supply Voltage":"AC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.71","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.37","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","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","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=337337&mlfb=3RT1035-1AK64","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AK64/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1035-1AK64?","answer":"The closest functional peer is the 3RT1044-1FB46, which is a larger frame size (S3 vs S2) and carries higher current ratings. It will not drop into the same panel footprint without rewiring and resizing the enclosure — the 3RT1035-1AK64 is the correct size S2 fit for a 55 mm wide DIN slot."},{"question":"What is the depth of 3RT1035-1AK64?","answer":"The listed depth is 164 mm, with a height of 112 mm and width of 55 mm."},{"question":"What solid wire sizes does the 3RT1035-1AK64 accept?","answer":"The main circuit terminals accept solid wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²). The control circuit accepts 2x (0.5 to 1.5 mm²) solid."},{"question":"Will 3RT1035-1AK64 drop into a panel specified around 3RT1044-1FB46 without rewiring?","answer":"No. The 3RT1044-1FB46 is a size S3 contactor with a wider footprint and higher current capacity. The 3RT1035-1AK64 is size S2 (55 mm wide) and will not physically fit the same DIN rail slot or match the terminal lugs without modification. They are not drop-in interchangeable."},{"question":"What compliance documentation does Siemens provide for 3RT1035-1AK64?","answer":"The evidence does not list specific compliance certifications (RoHS, REACH, UL, IEC) for this order code. Standard Siemens SIRIUS contactors typically carry CE, UL, and CSA marks, but verify the specific documentation against your project requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1AK64","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/3RT1035-1AK64 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}}