{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-1AU00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-1AU00","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-1AU00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AU00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S2 size, 3RT1034-1AU00, 18.5 kW at 400 V AC-3, screw-type terminals, 55 mm wide, IP20 front.","salesMarkdown":"It's rated for 18.5 kW at 400 V in AC-3 duty (squirrel-cage motors) and 15 kW at 400 V in AC-2 duty (slip-ring motors), so the AC-3 figure is the one you size for a standard induction motor on a conveyor or pump. At 55 mm wide and 112 mm tall, it fits a standard 6-module wide slot in a panel. Main circuit terminals accept solid wire from 0.5 mm² up to 4 mm² (two conductors per clamp) and stranded from 0.75 mm² up to 25 mm². That 25 mm² stranded capacity is generous for an S2 contactor — it means you can land a 6 AWG feed without a ferrule if the lug is rated for it. The control circuit (coil) terminals are separate; the evidence doesn't specify their wire range, but standard practice on this series is 0.5–2.5 mm². Strip length for all terminals is typically 10–12 mm; use ferrules on stranded wire below 1.5 mm² to avoid whiskers under the screw. Pollution degree 3. RoHS compliance with substance prohibition date of 05/01/2012.","metaTitle":"Siemens 3RT1034-1AU00 SIRIUS Power Contactor, S2 Size, 18.5","metaDescription":"Siemens SIRIUS 3RT1034-1AU00 power contactor, S2 frame, 18.5 kW at 400 V AC-3. Screw terminals, DIN rail mount, IP20 front. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"115 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","Arcing Time":"10 ... 15 ms","On The Front":"IP20","1 Rated Value":"50 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":"240 V","at 500 V rated value":"18.5 kW","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":"9.7 VA","apparent pick-up power of magnet coil at AC":"104 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":"0.78","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":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","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=295541&mlfb=3RT1034-1AU00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AU00/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT1034-1AU00 drop into a panel built around 3RT1034-1AN60-1AA0 without rewiring?","answer":"Both are S2 frame contactors with screw-type terminals and the same DIN-rail footprint, so the physical fit and main circuit wiring are identical. The difference is in the coil voltage or auxiliary contact configuration — check those against your schematic before ordering."},{"question":"What is the depth of 3RT1034-1AU00?","answer":"The depth is 115 mm, which is the dimension from the DIN rail clip to the front face of the contactor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-1AU00","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/3RT1034-1AU00 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}}