{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1AK68-0PA4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1AK68-0PA4","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1AK68-0PA4","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AK68-0PA4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1035-1AK68-0PA4, Size S2, 22 kW at 500 V AC-3, screw terminals, DIN rail mount.","salesMarkdown":"## What This SIRIUS Size S2 Contactor Does It's rated for 22 kW at 500 V AC-3 and 18.5 kW at 400 V AC-2, which covers the typical 3-phase induction motor range for pumps, fans, and conveyors on 400 V or 480 V lines. ## Wiring and Termination Reality Main circuit terminals are screw-type, accepting solid conductors from 2x (0.5 to 1.5 mm²) up to 2x (0.75 to 4 mm²), and stranded from 2x (0.75 to 25 mm²). That's a wide range — fine for both control wiring (1.5 mm²) and power tails (16 mm² or 25 mm²). The solid-or-stranded entry also lists 2x (0.75 to 16 mm²), which is the practical limit for most panel builders. Strip length and torque values aren't in this record, but the screw terminals are standard for the class. Auxiliary contacts are rated for switching at multiple voltages: 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V. That covers PLC-level signals (24 VDC) and control circuits up to 400 VAC. The 10 A at 24 V is useful for direct drive of indicator lamps or small relays without an interposing stage. That's typical for indoor panel environments — no special heating or cooling required unless the enclosure sits in a hot plant area. Switching frequency varies by duty: 1200 cycles/hour at AC-1 (resistive), 1000 at AC-3 (motor), and 300 at AC-4 (plugging/inching). For a conveyor running at 30 starts/hour, that's years of service before mechanical wear becomes a factor.","metaTitle":"Siemens 3RT1035-1AK68-0PA4 SIRIUS Power Contactor, 22 kW at","metaDescription":"Siemens SIRIUS 3RT1035-1AK68-0PA4 power contactor, Size S2, 22 kW at 500 V AC-3, 18.5 kW at 400 V AC-2. Screw terminals, DIN rail mount. 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":"65 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":"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 50 Hz rated value":"110 V","at 500 V rated value":"22 kW","at 60 Hz rated value":"120 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":"15 VA","apparent pick-up power of magnet coil at AC":"170 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":"0.76","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.35","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":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","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=269664&mlfb=3RT1035-1AK68-0PA4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AK68-0PA4/alternatives.json"},"ai":{"faq":[{"question":"What are the key power ratings for this contactor?","answer":"It's rated for 22 kW at 500 V AC-3 (motor starting) and 18.5 kW at 400 V AC-2. For auxiliary circuits, it switches 10 A at 24 V and 6 A at 230 V. The AC-3 rating is the one that governs motor load fit."},{"question":"What wire sizes does the screw terminal accept?","answer":"Solid conductors: 2x (0.5 to 1.5 mm²) up to 2x (0.75 to 4 mm²). Stranded: 2x (0.75 to 25 mm²). The combined solid-or-stranded entry also lists 2x (0.75 to 16 mm²). That covers most panel wiring from control circuits to power tails."},{"question":"Will this drop into a panel designed for the 3RT1044-1FB46?","answer":"Not without checking. The 3RT1044-1FB46 is a different Size S? frame with different ratings. While both are SIRIUS contactors on DIN rail, the terminal layout, coil voltage, and power ratings differ. Verify the existing panel's wiring diagram and mounting footprint before swapping."},{"question":"What compliance documentation is available for this part?","answer":"The record shows pollution degree 3 rating and IP20/IP00 enclosure ratings, which imply IEC 60947 compliance. Specific UL, CSA, RoHS, or REACH declarations are not in this evidence set — check the manufacturer's declaration pack or the nameplate markings on the unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1AK68-0PA4","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/3RT1035-1AK68-0PA4 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}}