{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1AT60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1AT60","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1AT60","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AT60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1035-1AT60 power contactor, Size S2, screw-type terminals, 18.5 kW at 400 V AC-2, 55 mm width, IP20 front.","salesMarkdown":"The AC-4 rating of 35 A at 400 V covers plugging and inching duty for reversing or jogging loads. For comparison, the AC-3 rating (squirrel-cage motors) would typically be higher, but this unit's AC-2 spec is the one that governs fit for slip-ring or crane-duty applications. Exceeding it risks contact welding or accelerated wear. The 55 mm width per unit means a row of four fits in a standard 220 mm wide enclosure section. Wire sizes: solid conductors accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) up to 2x (0.75 to 4 mm²) maximum. Stranded conductors handle 2x (0.75 to 25 mm²). The minimum permissible cross-section at 40 °C is 16 mm² for the main circuit. RoHS compliance date is 05/01/2012, meaning the contactor meets EU substance restrictions for lead, mercury, cadmium, and other restricted materials as of that date. This is the standard RoHS declaration for Siemens SIRIUS products of this generation.","metaTitle":"Siemens 3RT1035-1AT60 SIRIUS Power Contactor, Size S2, 18.5","metaDescription":"Siemens SIRIUS 3RT1035-1AT60 power contactor, Size S2, rated 18.5 kW at 400 V AC-2 duty. 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 60 Hz":"0.8 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20","1 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 500 V rated value":"22 kW","at 60 Hz rated value":"600 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":"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=389039&mlfb=3RT1035-1AT60","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AT60/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this contactor?","answer":"The headline ratings are 18.5 kW at 400 V for AC-2 motor duty, and 35 A at 400 V for AC-4 reversing/plugging duty. Mechanical life is 10 million cycles typical."},{"question":"What wire sizes does the 3RT1035-1AT60 accept?","answer":"Solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded: 2x (0.75 to 25 mm²). Minimum cross-section at 40 °C is 16 mm² for the main circuit."},{"question":"What are the mounting dimensions?","answer":"Width 55 mm, height 112 mm, depth 115 mm. It snaps onto a 35 mm DIN rail per EN 50022 and allows side-by-side mounting."},{"question":"What compliance documentation is available?","answer":"RoHS compliance is declared with a substance prohibition date of 05/01/2012. The contactor carries IP20 front protection and is rated for pollution degree 3 environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1AT60","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/3RT1035-1AT60 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}}