{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-3AG18-0PA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-3AG18-0PA3","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-3AG18-0PA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3AG18-0PA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1035-3AG18-0PA3, Size S2 power contactor, screw-type terminals, 22 kW at 500 V AC-3, 85 x 112 x 115 mm, DIN-rail mount.","salesMarkdown":"It switches motor loads up to 22 kW at 500 V in AC-3 duty, or 11.4 kW at 690 V. For AC-4 (inching/plugging) the rating is 35 A at 400 V. AC-3 is the standard motor-switching category — the 22 kW figure at 500 V tells you the contactor handles full-load motor starts without welding the contacts. The 690 V rating (11.4 kW) covers higher-voltage European or Canadian industrial supplies. Dimensions are 85 mm wide, 112 mm high, 115 mm deep — the Size S2 footprint is the standard for this current class. Screw-type terminals accept 2 x (0.25 to 2.5 mm²) solid or 2 x (0.75 to 25 mm²) stranded. The 25 mm² upper end on stranded means it can take a heavy feeder cable without needing a lug adapter — useful for the main power path. ## Operating conditions and ratings Coil operates on 50/60 Hz. Maximum switching rates vary by duty: 1200 cycles/hour AC-1, 600 AC-2, 1000 AC-3, 300 AC-4.","metaTitle":"Siemens 3RT1035-3AG18-0PA3 SIRIUS Power Contactor, Size S2,","metaDescription":"Siemens SIRIUS 3RT1035-3AG18-0PA3 power contactor, Size S2, rated 22 kW at 500 V AC-3. Screw terminals, DIN-rail mount. Current lifecycle stage: 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 (0.25 ... 2.5 mm²)","Width":"85 mm","at AC":"7 ... 20 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","at 60 Hz":"0.85 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20","1 Rated Value":"60 Hz","2 Rated Value":"50 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":"100 V","at 500 V rated value":"22 kW","at 60 Hz rated value":"110 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":"3","number of NO contacts for auxiliary contacts instantaneous contact":"3","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=183211&mlfb=3RT1035-3AG18-0PA3","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3AG18-0PA3/alternatives.json"},"ai":{"faq":[{"question":"What are the key power ratings for this contactor?","answer":"AC-3 motor switching: 22 kW at 500 V, 11.4 kW at 690 V. AC-4 (inching/plugging): 35 A at 400 V. AC-2 at 400 V: 18.5 kW."},{"question":"What is the physical size and mounting?","answer":"Size S2 footprint: 85 mm wide, 112 mm high, 115 mm deep. Mounts on 35 mm DIN rail per DIN EN 50022, screw or snap-on. Side-by-side mounting allowed."},{"question":"What wire sizes does the screw terminal accept?","answer":"Solid: 2 x (0.25 to 2.5 mm²). Stranded: 2 x (0.75 to 25 mm²). The 25 mm² stranded capacity handles heavy power feeders directly."},{"question":"What is the closest functional alternative to this contactor?","answer":"The 3RT1034-1AN60-1AA0 is a smaller Size S0 contactor — it will not drop into the same panel footprint without re-drilling or changing the DIN-rail layout. The 3RT1036-1AB00 is the next size up (S3) for higher current. For a direct Size S2 replacement with similar ratings, this 3RT1035-3AG18-0PA3 is the correct fit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-3AG18-0PA3","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/3RT1035-3AG18-0PA3 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}}