{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-3AL16","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-3AL16","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-3AL16","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3AL16","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 3RT1035-3AL16, screw-type terminals, 18.5 kW at 400 V AC-2, 22 kW at 500 V, 115 mm depth.","salesMarkdown":"Depth is 115 mm, width 75 mm, height 112 mm — check your enclosure depth clearance if you're swapping into an existing panel, especially one originally laid out for a shorter contactor. For AC-3 (squirrel-cage motors, normal start/run), the rating at 500 V is 22 kW, and at 690 V it's 11.4 kW. The contactor is rated for 60 Hz operation, with a rated control supply voltage of 230 V at 60 Hz. Maximum switching rates vary by duty: 1200 cycles/hour for AC-1 (resistive), 1000 for AC-3, and 300 for AC-4 — the AC-4 figure governs if you're doing frequent reversing. Solid wire accepts 2x (0.25 to 2.5 mm²), stranded accepts 2x (0.75 to 25 mm²). At 40 °C ambient, the minimum permissible conductor cross-section is 16 mm² — that's the thermal limit for continuous current, not the mechanical minimum. RoHS compliance date is May 1, 2012 — the part meets the EU RoHS substance restrictions from that date forward.","metaTitle":"Siemens 3RT1035-3AL16 SIRIUS Power Contactor, S2, 18.5 kW AC","metaDescription":"Siemens 3RT1035-3AL16 SIRIUS power contactor, size S2. Rated 18.5 kW at 400 V AC-2, 22 kW at 500 V. Screw/snap-on 35 mm DIN rail. Current lifecycle stage. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"115 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"75 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":"230 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":"spring-loaded 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 (24 ... 14)","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 (0.25 ... 1.5 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 (0.25 ... 2.5 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":"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=470704&mlfb=3RT1035-3AL16","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3AL16/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT1035-3AL16?","answer":"The 3RT1036-1AB00 is a peer in the same SIRIUS contactor family, but it's a different frame size and rating. The 3RT1035-3AL16 is size S2 with screw terminals; the 3RT1036-1AB00 is size S3. They are not drop-in replacements — the mounting footprint, terminal spacing, and current ratings differ. Verify your panel layout and load before switching."},{"question":"What is the depth of 3RT1035-3AL16?","answer":"115 mm — this is the dimension from the DIN-rail mounting surface to the front of the contactor. Check your enclosure depth if replacing a shorter unit."},{"question":"What solid wire sizes does the 3RT1035-3AL16 accept?","answer":"The main circuit screw terminals accept 2 conductors of solid wire from 0.25 mm² up to 2.5 mm² per terminal."},{"question":"Will 3RT1035-3AL16 drop into a panel specified for 3RT1036-1AB00?","answer":"No — the 3RT1035-3AL16 is size S2 (75 mm wide, 115 mm deep) while the 3RT1036-1AB00 is size S3 with different mounting dimensions and terminal spacing. You would need to re-drill the DIN rail or use an adapter plate, and verify the terminal lug positions align with your wiring."},{"question":"What compliance documentation is available for 3RT1035-3AL16?","answer":"RoHS compliance is confirmed with a substance prohibition date of May 1, 2012. The contactor carries IP20 protection on the front (IP00 at terminals) and is rated for pollution degree 3. Standard Siemens documentation includes the CE declaration and manufacturer's declaration of conformity for the SIRIUS series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-3AL16","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/3RT1035-3AL16 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}}