{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1AN24","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1AN24","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1AN24","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AN24","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S2, order code 3RT1035-1AN24, rated 18.5 kW at AC-2 400 V, screw terminals, snap-on 35 mm DIN rail.","salesMarkdown":"Its headline rating is 18.5 kW at AC-2 duty at 400 V — that's the current it can make and break for slip-ring motor starting, where the load is inductive but not as severe as full plugging. For AC-3 squirrel-cage motors, the rating is 22 kW at 500 V and 11.4 kW at 690 V, covering the common European 400 V and 690 V industrial supplies. At 55 mm wide, 112 mm tall, and 164 mm deep, it fits a standard S2 footprint — plan for the depth when routing wires behind the DIN rail. That's enough for the full-rated motor cable on a 22 kW drive — just make sure the ferrule or ring tongue matches the screw clamp range. The front is IP20 (finger-safe), the terminal area is IP00 (open), so the panel enclosure provides the overall IP rating. The AC-1 maximum operating rate is 1200 cycles per hour — that's for resistive loads like heaters, where the contactor sees minimal arcing. AC-3 drops to 1000 cycles per hour (standard motor starting), and AC-4 is 300 cycles per hour (plugging or inching). If your application needs frequent jogging, the AC-4 limit is the one that governs contact life, not the AC-3 number. That's the mechanism without load — electrical life will be lower depending on the switching duty and current. For a conveyor line cycling once per minute, the mechanical life alone gives about 19 years of continuous operation. If your panel sits in an unheated warehouse in winter, the storage range covers it; the operating range covers most plant-floor conditions. ## Wiring and integration notes The coil operates at 50 Hz and 60 Hz, with a voltage tolerance of 0.8 to 1.1 times rated at 50 Hz and 0.85 to 1.1 at 60 Hz. That's a standard ±10% band with a slight asymmetry at 50 Hz — the coil holds in at 80% of nominal, drops out below that. Auxiliary contact ratings: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 0.3 A at 220 V DC. The DC ratings drop fast with voltage — at 220 V DC it's only 0.3 A, so don't plan to switch a DC solenoid directly without checking the load current against the curve.","metaTitle":"Siemens 3RT1035-1AN24 SIRIUS Power Contactor, Size S2, 18.5","metaDescription":"Siemens 3RT1035-1AN24 SIRIUS power contactor, Size S2, rated 18.5 kW at AC-2 400V. Screw terminals, snap-on 35mm DIN rail. Current lifecycle stage. Available to order against RFQ.","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":"220 V","at 500 V rated value":"22 kW","at 60 Hz rated value":"220 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=197218&mlfb=3RT1035-1AN24","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AN24/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1035-1AN24?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source for 3RT1035-1AN24?","answer":"The 3RT1044-1FB46 is a larger-frame SIRIUS contactor (Size S3 vs S2) with higher current ratings. It will not drop into the same DIN-rail footprint without panel modification — the width and depth differ. If you need a direct mechanical swap, stick with the S2 frame size."},{"question":"What compliance documentation does Siemens provide for 3RT1035-1AN24?","answer":"As a standard SIRIUS catalog item, Siemens provides the usual IEC/EN 60947-4-1 declaration of conformity, CE marking, and UL/CSA recognition where applicable. RoHS and REACH compliance declarations are available through Siemens Industry Online Support."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1AN24","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/3RT1035-1AN24 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}}