{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-1AK64","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-1AK64","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-1AK64","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AK64","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 3RT1034-1AK64, screw-type terminals, 18.5 kW at 500 V AC-3, snap-on mounting on 35 mm DIN rail.","salesMarkdown":"The Siemens 3RT1034-1AK64 is a SIRIUS power contactor in frame size S2, rated for motor switching at 18.5 kW on a 500 V AC-3 supply and 15 kW at 400 V AC-2. AC-3 is the standard duty for squirrel-cage motors during starting and running; AC-2 covers wound-rotor motors where switching occurs at reduced current. The contactor carries a maximum 1 000 operations per hour in AC-3, so it handles frequent start-stop cycles on conveyors or pumps without derating. That covers motor leads up to about 6 AWG stranded, common for 15–20 kW drives. The auxiliary contacts are rated for switching at 24 VDC (10 A) down to 220 VDC (0.3 A), which covers PLC outputs and relay coils in the control cabinet. Side-by-side mounting is permitted, so multiple contactors can pack tightly in a row without derating. Dimensions are 112 mm high, 55 mm wide, and 164 mm deep. That depth includes the terminal overhang; allow clearance for screwdriver access and cable bending radius when laying out the enclosure. ## Environmental and installation notes Coil operating range is 0.8 to 1.1 times rated voltage at both 50 Hz and 60 Hz, with pick-up time of 7–20 ms and arcing time of 10–15 ms.","metaTitle":"Siemens 3RT1034-1AK64 SIRIUS Power Contactor, 18.5 kW AC-3","metaDescription":"Siemens 3RT1034-1AK64 SIRIUS power contactor, size S2. Rated 18.5 kW at 500 V AC-3, 15 kW at 400 V AC-2. Screw terminals, snap-on DIN rail. 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":"750 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"250 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":"18.5 kW","at 60 Hz rated value":"120 V","at 690 V rated value":"10 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"15 kW","at AC-4 at 400 V rated value":"29 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"16 mm²","at 60 °C minimum permissible":"10 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"18 kW","at 690 V at 60 °C rated value":"54 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":"320 A","Finely Stranded Without Core End Processing":"2x (0.75 ... 16 mm²)","apparent holding power of magnet coil at AC":"10.1 VA","apparent pick-up power of magnet coil at AC":"120 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":"0.7","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.42","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=73524&mlfb=3RT1034-1AK64","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AK64/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT1034-1AK64?","answer":"The peer 3RT1036-1AB00 is a larger frame size (S3 vs S2) and will not drop into the same DIN-rail footprint without panel modification. The 3RT1034-1AK64 is the correct size S2 part for 18.5 kW at 500 V AC-3; if you need higher current, step up to the S3 frame. Stick with the 3RT1034-1AK64 for the original specification."},{"question":"What wire sizes does the 3RT1034-1AK64 accept?","answer":"The main screw terminals accept stranded conductors 2x (0.75–25 mm²) and solid conductors 2x (0.5–1.5 mm²) or 2x (0.75–2.5 mm²) with a maximum of 2x (0.75–4 mm²). That covers motor leads from about 18 AWG up to 4 AWG stranded."},{"question":"What is the depth of 3RT1034-1AK64?","answer":"The depth is 164 mm, which includes the terminal projection. Allow additional clearance for cable bending and screwdriver access in the enclosure layout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-1AK64","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/3RT1034-1AK64 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}}