{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1AH24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1AH24","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1AH24","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AH24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S2 power contactor, 3RT1035-1AH24, 22 kW at 500 V AC-3, 18.5 kW at 400 V AC-2, screw terminals, IP20 front, 55 x 112 x 164 mm.","salesMarkdown":"The Siemens 3RT1035-1AH24 is a SIRIUS S2-size power contactor rated for 22 kW at 500 V AC-3 (motor switching) and 18.5 kW at 400 V AC-2 (slip-ring motor / wound-rotor duty). That 22 kW figure at 500 V tells you it handles a standard 30 HP motor on a 480 V line — the AC-3 category covers starting and stopping squirrel-cage motors under load, which is the heavy lifting in most conveyor, pump, and fan applications. The AC-2 rating at 400 V (18.5 kW) matters if you're switching wound-rotor motors where the rotor circuit is opened under load; that duty cycle is harder on the contacts, so the derating from AC-3 is expected. Mechanically rated for 10 million operations typical, with maximum switching rates of 1 200 cycles/hour at AC-1 (resistive), 1 000 at AC-3, and 300 at AC-4 (plugging / inching). The arcing time sits at 10–15 ms, and the coil pick-up / drop-out window is 7–20 ms at AC — let me show you why that matters: if your PLC output cycle time is faster than 20 ms, you need a hold-in interlock or a longer pulse to guarantee the contactor seals. ## Terminal details and wire range Solid wire: 2x (0.5... 1.5 mm²) and 2x (0.75... 2.5 mm²), max 2x (0.75... 4 mm²). The auxiliary / coil terminals are not separately listed, but the main circuit range covers the typical power feed. Strip length for screw terminals is not given here — if you are prepping wires, a standard 10–12 mm strip is safe for this class, but verify against the terminal marking on the part itself. ## Environmental limits and storage The coil itself is rated for 50/60 Hz at 0.8–1.1 x rated voltage (48 V at 50 Hz, 48 V at 60 Hz).","metaTitle":"Siemens 3RT1035-1AH24 SIRIUS Power Contactor, 22 kW at 500 V","metaDescription":"Siemens 3RT1035-1AH24 SIRIUS S2 power contactor, 22 kW at 500 V AC-3, 18.5 kW at 400 V AC-2. Screw terminals, DIN rail snap-on, IP20 front. Active lifecycle, available to order. Re","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"164 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":"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=372176&mlfb=3RT1035-1AH24","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AH24/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT1035-1AH24?","answer":"We source this part through independent distribution and quote it to order against an RFQ. Availability and current pricing are confirmed at quote time — submit a request and we will get you a firm number."},{"question":"Will 3RT1035-1AH24 drop into a panel designed for 3RT1044-1FB46?","answer":"No — the 3RT1035-1AH24 is an S2 frame (55 mm wide), while the 3RT1044-1FB46 is an S3 frame (70 mm wide). The mounting rail footprint and terminal spacing differ; rewiring and possibly a new DIN rail section are required."},{"question":"What is the depth of 3RT1035-1AH24?","answer":"The depth is 164 mm. Overall dimensions are 55 mm wide by 112 mm high by 164 mm deep."},{"question":"What solid wire sizes does the main circuit terminal accept?","answer":"It accepts 2x (0.5... 1.5 mm²) and 2x (0.75... 2.5 mm²), with a maximum of 2x (0.75... 4 mm²) for solid wire."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1AH24","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/3RT1035-1AH24 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}}