{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-1AD20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-1AD20","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-1AD20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AD20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, 3RT1034-1AD20, Size S2, 18.5 kW at 500 V AC-3, screw terminals, DIN rail mount.","salesMarkdown":"Its headline rating is 18.5 kW at 500 V under AC-3 duty, which means it handles the high inrush of a squirrel-cage motor starting direct-on-line up to that load — the rating that governs real-world motor switching, not the resistive AC-1 figure. ## Termination and Wiring This range covers most panel wiring from control-circuit tails to motor feeders; the larger stranded capacity handles the heavier cable for the 18.5 kW output. ## Environmental and Protection Ratings The front of the contactor is rated IP20 — finger-safe for panel installation — while the terminal area is IP00, meaning the wiring zone is open and must be housed within the enclosure. Pollution degree 3 indicates it tolerates conductive dust and humidity typical of industrial atmospheres.","metaTitle":"Siemens 3RT1034-1AD20 SIRIUS Power Contactor, 18.5 kW at 500","metaDescription":"Siemens SIRIUS 3RT1034-1AD20 power contactor, size S2, 18.5 kW at 500 V AC-3. Active lifecycle, screw terminals, DIN rail mount. Source to order via RFQ.","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","at 60 Hz":"0.85 ... 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":"42 V","at 500 V rated value":"18.5 kW","at 60 Hz rated value":"42 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":"11.3 VA","apparent pick-up power of magnet coil at AC":"127 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":"0.73","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.41","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=410387&mlfb=3RT1034-1AD20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AD20/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1034-1AD20?","answer":"The peer 3RT1034-1AN60-1AA0 shares the same Size S2 frame and main power ratings, so it drops into the same panel footprint without rewiring the power circuit. The difference is the coil voltage and auxiliary contact configuration — verify those before substituting."},{"question":"What are the key ratings for 3RT1034-1AD20?","answer":"It is rated for 18.5 kW at 500 V AC-3 motor duty, mounts on 35 mm DIN rail, accepts screw terminals for solid up to 4 mm² and stranded up to 25 mm², and has a mechanical endurance of 10,000,000 operations typical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-1AD20","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/3RT1034-1AD20 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}}