{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-3AG20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-3AG20","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-3AG20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3AG20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1035-3AG20, S2 frame size, 22 kW at 500 V AC-3, 110 V 50/60 Hz coil, screw-type terminals, DIN rail mount.","salesMarkdown":"## SIRIUS S2 Power Contactor — 3RT1035-3AG20 It is rated for 22 kW at 500 V in AC-3 duty and 18.5 kW at 400 V in AC-2 duty, making it suitable for standard induction motor starting and reversing applications. The coil is wound for 110 V at both 50 Hz and 60 Hz, with an operating voltage range of 0.8 to 1.1 times rated value at 50 Hz and 0.85 to 1.1 at 60 Hz. The AC-3 rating of 22 kW at 500 V is the key selection number for standard squirrel-cage motor starting — that's the load it handles across the line without welding contacts. At 690 V the same contactor is rated for 11.4 kW AC-3, so it's not a universal derating curve — check the voltage column for your line. Mechanical service life is rated at 10,000,000 operations typical, with maximum switching frequencies of 1,200 cycles/hour in AC-1, 1,000 in AC-3, and 300 in AC-4. For high-duty-cycle applications like frequent jogging or plug reversing, the AC-4 limit governs — 300 cycles/hour is the ceiling before contact wear accelerates. Auxiliary contacts handle 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — sufficient for control-circuit interlocking and PLC inputs. The main circuit uses screw-type terminals accepting 2x (0.75 to 25 mm²) stranded or 2x (0.25 to 2.5 mm²) solid, with an alternative rating of 2x (0.75 to 16 mm²) for mixed wire sizes. Side-by-side mounting is permitted — no derating required for zero-gap installation in a crowded enclosure.","metaTitle":"Siemens 3RT1035-3AG20 SIRIUS Power Contactor, S2 Frame, 22 k","metaDescription":"Siemens 3RT1035-3AG20 SIRIUS power contactor, S2 frame size. Rated 22 kW at 500 V AC-3, 18.5 kW at 400 V AC-2. 110 V 50/60 Hz coil. Screw terminals, DIN rail mount. Current product","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":"55 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":"0.85 ... 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":"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":"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":"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=479251&mlfb=3RT1035-3AG20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3AG20/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to the 3RT1035-3AG20?","answer":"The 3RT1036-1AB00 is a higher-current sibling in the same SIRIUS S2 frame. The 3RT1035-3AG20 is rated for 22 kW at 500 V AC-3, while the 3RT1036-1AB00 steps up to a higher motor power rating. Both share the same DIN-rail footprint and terminal layout, so a panel designed for one can accept the other without rewiring, provided the coil voltage and protection coordination are matched."},{"question":"What are the key dimensions of the 3RT1035-3AG20?","answer":"Width is 55 mm, height 112 mm, depth 115 mm. This is the S2 frame size, which is the standard footprint for this power class across the SIRIUS contactor family."},{"question":"What conductor sizes does the 3RT1035-3AG20 accept?","answer":"The screw terminals accept 2x (0.25 to 2.5 mm²) solid or 2x (0.75 to 25 mm²) stranded wire. An alternative rating of 2x (0.75 to 16 mm²) covers mixed solid/stranded combinations."},{"question":"Will the 3RT1035-3AG20 drop into a panel designed for the 3RT1036-1AB00?","answer":"Yes — both are S2 frame size with the same 55 mm width, 112 mm height, and 115 mm depth. The DIN-rail mounting and terminal layout are identical. The difference is in the motor power rating: the 3RT1035-3AG20 is 22 kW at 500 V AC-3 versus the higher rating of the 3RT1036-1AB00. As long as the load current and coil voltage match, it's a direct mechanical swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-3AG20","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/3RT1035-3AG20 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}}