{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-3BW40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-3BW40","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-3BW40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3BW40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, order code 3RT1035-3BW40, rated 22 kW at 500 V AC-3, screw-type terminals, IP20 front, DIN rail mount.","salesMarkdown":"The 3RT1035-3BW40 is a Siemens SIRIUS power contactor in size S2, rated for 22 kW at 500 V AC-3 duty — that's the motor-switching rating that governs the real load, not the higher AC-1 resistive figure. AC-3 at 400 V is 18.5 kW, and AC-4 at 400 V is 35 A, so the contactor is sized for standard three-phase induction motors up to that power band. Side-by-side mounting is permitted, which matters when packing multiple contactors in a row — no derating gap required for that layout. The front face carries IP20, the terminals are IP00, so the panel enclosure provides the environmental seal. Solid conductors: 2x (0.25 to 2.5 mm²). Stranded: 2x (0.75 to 25 mm²). At 40 °C, the minimum permissible conductor cross-section is 16 mm² — that's the thermal derating floor, not the mechanical minimum. ## Switching frequency and coil data Maximum switching rates: AC-1 at 1200 operations per hour, AC-3 at 1000, AC-2 at 600, AC-4 at 300. Coil rated value is 48 V; at 24 V the contactor switches 10 A, at 60 V it switches 2 A, at 110 V it switches 1 A, at 220 V it switches 0.3 A, at 230 V it switches 6 A, at 400 V it switches 3 A.","metaTitle":"Siemens 3RT1035-3BW40 SIRIUS Power Contactor, Size S2, 22 kW","metaDescription":"Siemens 3RT1035-3BW40 SIRIUS power contactor, size S2, rated 22 kW at 500 V AC-3. Screw terminals, DIN rail mount. Active production. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"55 mm","at DC":"20 ... 25 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","Arcing Time":"10 ... 15 ms","Rated Value":"48 V","On The Front":"IP20","Initial Value":"0.8","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","Full-Scale Value":"1.1","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 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":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","closing power of magnet coil at DC":"13.3 W","holding power of magnet coil at DC":"13.3 W","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 (24 ... 14)","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 (0.25 ... 1.5 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 (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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=295552&mlfb=3RT1035-3BW40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-3BW40/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT1035-3BW40?","answer":"Submit an RFQ through this listing. The part is sourced and quoted to order through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation does Siemens provide for 3RT1035-3BW40?","answer":"The part carries a substance prohibition date of 05/01/2012, indicating RoHS compliance per the EU directive. The manufacturer provides standard declarations of conformity for IEC and UL standards upon request."},{"question":"What is 3RT1035-3BW40's listed depth?","answer":"The depth is 130 mm, with a width of 55 mm and height of 112 mm — the S2 frame size fits standard DIN-rail enclosures."},{"question":"What are the operating temperature limits for 3RT1035-3BW40?","answer":"During operation the range is -25 to +60 °C; during storage it is -55 to +80 °C. The storage limit governs handling and warehousing, not running conditions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-3BW40","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/3RT1035-3BW40 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}}