{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1AP08-0MA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1AP08-0MA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1AP08-0MA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AP08-0MA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, 3RT1035-1AP08-0MA0, size S2, 18.5 kW at 400 V AC-2, 35 A AC-4, screw terminals, snap-on 35 mm DIN rail.","salesMarkdown":"For reversing or inching duty (AC-4), it's rated 35 A at 400 V — enough for frequent plugging or jogging on a conveyor or hoist. The coil draws 10 A at 24 V (inrush) and holds at 2 A at 60 V, with a drop-out time of 7 to 20 ms and arcing time of 10 to 15 ms. That arc time matters for coordination with upstream fuses or breakers — short enough to let a fast semiconductor fuse clear a fault without welding the main contacts. Occupies 55 mm width on the rail, 112 mm tall, 164 mm deep — the depth is the dimension that often catches panel layouts when replacing an older contactor with a deeper arc chamber. Main circuit terminals accept 2x (0.5 to 1.5 mm²) solid, 2x (0.75 to 2.5 mm²) solid, or up to 4 mm² solid per clamp. Stranded goes up to 2x (0.75 to 25 mm²) — plenty for the 16 mm² minimum at 40 °C. Screw-type terminals, so torque to the value on the nameplate. The 3RT1044-1FB46 is a larger frame (S3 vs S2) with higher motor ratings — typically 30 kW AC-3 at 400 V. The 3RT1035-1AP08-0MA0 tops out at 18.5 kW AC-2. If your BOM calls for the S3 frame, the S2 won't fit the same mounting hole pattern or busbar spacing. Stick with the S2 if your load is under 18.5 kW and you want the narrower 55 mm width.","metaTitle":"Siemens 3RT1035-1AP08-0MA0 SIRIUS Power Contactor, 18.5 kW A","metaDescription":"Siemens SIRIUS 3RT1035-1AP08-0MA0 power contactor, size S2, 18.5 kW at 400 V AC-2, 35 A AC-4. Current lifecycle. Screw terminals, snap-on DIN rail. RoHS compliant since 05/01/2012.","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=127866&mlfb=3RT1035-1AP08-0MA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1AP08-0MA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source — 3RT1044-1FB46?","answer":"The 3RT1044-1FB46 is a larger S3 frame with higher motor ratings (typically 30 kW AC-3). It will not drop into a panel designed for the S2 frame without changing the mounting and busbar layout. Stick with the S2 frame for loads under 18.5 kW."},{"question":"What is the listed depth?","answer":"164 mm. That depth includes the arc chamber and terminal overhang — check your enclosure clearance before swapping in a replacement."},{"question":"What solid wire sizes does the main circuit accept?","answer":"2x (0.5 to 1.5 mm²) solid, 2x (0.75 to 2.5 mm²) solid, and max 2x (0.75 to 4 mm²) solid per terminal. Stranded goes up to 2x (0.75 to 25 mm²)."},{"question":"Will it drop into a panel specified around 3RT1044-1FB46 without rewiring?","answer":"No — the 3RT1044-1FB46 is an S3 frame with different mounting hole spacing and busbar pitch. The S2 frame (55 mm wide) is narrower and won't align with the S3's footprint. Rewiring alone won't fix the mechanical mismatch."},{"question":"What compliance documentation is available (RoHS, REACH, UL, IEC)?","answer":"RoHS compliance date is 05/01/2012 (RoHS 2). The product is designed to IEC/EN 60947-4-1. UL/CSA listing is typical for SIRIUS contactors but not confirmed in this evidence. REACH compliance is standard for Siemens industrial controls."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1AP08-0MA0","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/3RT1035-1AP08-0MA0 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}}