{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1AH20-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1AH20-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1AH20-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AH20-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 3RT1035-1AH20-1AA0, 48 V 50/60 Hz coil, screw-type terminals, 22 kW at 500 V.","salesMarkdown":"The Siemens SIRIUS 3RT1035-1AH20-1AA0 is a size S2 power contactor with a 48 V 50/60 Hz coil. That 55 mm width and 112 mm height mean it fits standard enclosure backplanes without crowding adjacent devices. The 115 mm depth is the dimension to watch when you're laying out gland plates or door clearance — it's not a shallow unit, so plan for that reach into the enclosure. Rated for 22 kW at 500 V and 11.4 kW at 690 V, this contactor handles the motor branch circuit for pumps, fans, and conveyors in that power band. The coil pulls 48 V at either 50 or 60 Hz, with an operating range of 0.8 to 1.1 times rated voltage at 50 Hz and 0.85 to 1.1 at 60 Hz. That means the coil holds in reliably down to about 38.4 V on a 50 Hz supply — useful if your control transformer is lightly loaded or you've got long cable runs. That's enough cross-section for the full rated motor current without needing lug adapters. The auxiliary contacts are rated 10 A at 24 V, derating to 0.3 A at 220 V — enough for PLC inputs or pilot lights on the same control voltage. The IP20 front keeps fingers out; the IP00 terminal area expects enclosure protection. Mechanical life is typical 10 million operations, and the switching frequency tops out at 1 200 cycles per hour for AC-1 resistive loads, 1 000 for AC-3 motor starting. That's a solid 3-second cycle time at maximum — fine for rapid cycling applications like indexing conveyors. That's fast enough for most motor control schemes but not so fast that you'll get nuisance dropouts from voltage sags. The coil suppression is built into the design — no external flyback diode needed for the AC coil.","metaTitle":"Siemens SIRIUS 3RT1035-1AH20-1AA0 Power Contactor, Size S2,","metaDescription":"Siemens SIRIUS 3RT1035-1AH20-1AA0 power contactor, size S2, 48 V 50/60 Hz coil. Screw terminals, 22 kW at 500 V. 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 (0.5 ... 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 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":"48 V","at 500 V rated value":"22 kW","at 60 Hz rated value":"48 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":"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=335681&mlfb=3RT1035-1AH20-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AH20-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this contactor?","answer":"It's a size S2 power contactor with a 48 V 50/60 Hz coil, rated 22 kW at 500 V and 11.4 kW at 690 V. The AC-2 rating at 400 V is 18.5 kW. Screw-type terminals accept solid conductors up to 4 mm² and stranded up to 25 mm². Mechanical life is typical 10 million operations."},{"question":"What are the mounting dimensions?","answer":"Width is 55 mm, height is 112 mm, depth is 115 mm. It mounts on 35 mm DIN rail per DIN EN 50022 via screw or snap-on. Side-by-side mounting is supported."},{"question":"What environment ratings does it carry?","answer":"Degree of pollution 3 for conductive environments. IP20 on the front, IP00 at the terminals (expect enclosure protection). Operating temperature -25 to +60 °C, storage -55 to +80 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1AH20-1AA0","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/3RT1035-1AH20-1AA0 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}}