{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-1AQ66","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-1AQ66","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-1AQ66","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AQ66","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1034-1AQ66, size S2, screw-type terminals, 18.5 kW at 500 V / 10 kW at 690 V, 50/60 Hz, DIN rail mount.","salesMarkdown":"It carries an AC-2 rating of 15 kW at 400 V for slip-ring motors and an AC-3 rating of 18.5 kW at 500 V and 10 kW at 690 V for standard squirrel-cage induction motors. The 50/60 Hz coil operates across a 0.8 to 1.1 voltage range, so it holds in during dips but drops out cleanly below the undervoltage threshold. The 18.5 kW at 500 V (AC-3) and 10 kW at 690 V (AC-3) are the numbers that decide motor fit — match these to the nameplate kW of your induction motor. For slip-ring or wound-rotor motors, use the AC-2 rating of 15 kW at 400 V. The contactor also has specified AC-1 resistive ratings for heater or lighting loads, with a maximum operating frequency of 1 200 cycles per hour in that duty. The auxiliary contact block is rated for switching at 24 V (10 A), 60 V (2 A), 110 V (1 A), 220 V (0.3 A), 230 V (6 A), and 400 V (3 A). These are the values for control-circuit isolation — verify your PLC output or relay matches the voltage and current you're switching. The screw-type terminals on the main circuit accept solid conductors from 2x (0.5 to 4 mm²) and stranded from 2x (0.75 to 25 mm²). The control circuit terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded. These are the wire ranges for panel wiring — no special lug kit needed for standard builds. Dimensions are 112 mm high, 75 mm wide, 115 mm deep — the S2 frame occupies the same footprint as other SIRIUS S2 contactors, so a panel laid out for a 3RT1036 will accept this unit without drilling changes. Side-by-side mounting is allowed, so no spacing gaps are required between units on the rail.","metaTitle":"Siemens SIRIUS 3RT1034-1AQ66 Power Contactor, S2, 18.5 kW at","metaDescription":"Siemens SIRIUS 3RT1034-1AQ66 power contactor, size S2. Rated 18.5 kW at 500 V / 10 kW at 690 V. Screw terminals, DIN rail mount. Active production. Source 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":"75 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":"220 V","at 500 V rated value":"18.5 kW","at 60 Hz rated value":"264 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=22037&mlfb=3RT1034-1AQ66","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1AQ66/alternatives.json"},"ai":{"faq":[{"question":"What are the main circuit terminal wire ranges?","answer":"The main circuit screw 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 conductors: 2x (0.75 to 25 mm²). Control circuit terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded."},{"question":"What compliance documentation does Siemens provide for this contactor?","answer":"The product carries Siemens SIRIUS branding and is designed to meet IEC/EN standards for industrial control equipment. Specific certifications (UL, CSA, CE, RoHS, REACH) are standard for the SIRIUS family, but the exact approval markings on the nameplate should be verified against your local regulatory requirements. The evidence does not list individual certs for this specific order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-1AQ66","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/3RT1034-1AQ66 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}}