{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1AP04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1AP04","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1AP04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AP04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1035-1AP04, S2 frame, screw-type terminals, 18.5 kW AC-2 at 400 V, 35 A AC-4 at 400 V, 55 mm width, DIN EN 50022 rail mount.","salesMarkdown":"The Siemens 3RT1035-1AP04 is a SIRIUS S2-frame power contactor with screw-type terminals, sized for motor switching in control panels. Its key motor ratings: 18.5 kW at 400 V in AC-2 duty (slip-ring motors, moderate overload) and 35 A at 400 V in AC-4 duty (plugging, inching, reversing). These are the figures that govern fit for a motor branch circuit, not the higher AC-1 resistive rating. The contactor accepts stranded conductors up to 2x 25 mm² on the main circuit, and solid or stranded wire from 0.5 mm² up to 4 mm² for the coil/auxiliary terminals. The S2 frame depth of 164 mm and height of 112 mm mean it fits standard 200 mm deep enclosures with clearance for wiring. The RoHS compliance date is May 1, 2012, covering the EU RoHS scope. The AC-4 rating of 35 A at 400 V governs frequent reversing or inching duty, where the contacts must interrupt full-load current at each operation. The mechanical life is typically 10 million operations, which is the contactor body's endurance before wear — electrical life will be lower and depends on the switching load.","metaTitle":"Siemens 3RT1035-1AP04 SIRIUS Power Contactor, S2 Frame, 18.5","metaDescription":"Siemens 3RT1035-1AP04 SIRIUS power contactor, S2 frame, 18.5 kW AC-2 at 400 V, 35 A AC-4. Screw terminals, DIN rail mount. Current production, sourced to order.","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","Arcing Time":"10 ... 15 ms","On The Front":"IP20","1 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":"230 V","at 500 V rated value":"22 kW","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":"12.5 VA","apparent pick-up power of magnet coil at AC":"145 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":"0.79","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.36","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=467923&mlfb=3RT1035-1AP04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AP04/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this contactor?","answer":"The AC-2 rating at 400 V is 18.5 kW for slip-ring motor duty. The AC-4 rating at 400 V is 35 A for reversing or inching applications."},{"question":"What wire sizes does the 3RT1035-1AP04 accept?","answer":"Main circuit terminals accept stranded conductors up to 2x 25 mm². Coil and auxiliary terminals accept solid wire from 0.5 mm² to 4 mm² or stranded from 0.75 mm² to 2.5 mm²."},{"question":"What is the mounting method and panel footprint?","answer":"Screw and snap-on mounting onto a 35 mm DIN rail per EN 50022. The contactor is 55 mm wide, 112 mm high, and 164 mm deep. Side-by-side mounting is allowed without derating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1AP04","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/3RT1035-1AP04 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}}