{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2035-1CP04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2035-1CP04","canonicalUrl":"https://aoctrl.com/siemens/3RT2035-1CP04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2035-1CP04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S2, 3RT2035-1CP04, 55 mm width, screw-type terminals, 480 V 40 A AC-3 rated, screw and snap-on 35 mm DIN rail mount.","salesMarkdown":"## SIRIUS Size S2 power contactor — 480 V 40 A AC-3, screw terminals, DIN rail The Siemens 3RT2035-1CP04 is a SIRIUS Size S2 power contactor rated for 40 A at 480 V in AC-3 duty, making it the right fit for switching three-phase motor loads up to that current in a 480 V line. The screw-type coil terminals accept 2x (0.5…1.5 mm²) or 2x (0.75…2.5 mm²) solid or stranded wire, so it integrates cleanly into a panel built around traditional screw-clamp wiring. ## Switching frequency and duty-cycle capability This contactor is rated for 1 200 operations per hour in AC-1 (resistive) duty, 1 000/h in AC-3 (motor starting) and AC-3e duty, 750/h in AC-2 (slip-ring motor), and 300/h in AC-4 (plugging/inching). For a motor-driven conveyor or pump cycling every few seconds, the AC-3 figure of 1 000/h — roughly one operation every 3.6 seconds — is the practical ceiling. Exceeding that rate in AC-4 duty accelerates contact wear; the 300/h limit there reflects the heavier arc stress of reversing or inching. The 174 mm depth includes the contactor body and terminal projection; plan for that when laying out the DIN rail against the enclosure backplate.","metaTitle":"Siemens 3RT2035-1CP04 SIRIUS Power Contactor, Size S2, 55 mm","metaDescription":"Siemens 3RT2035-1CP04 SIRIUS power contactor, Size S2, 55 mm wide, 480 V 40 A AC-3 rating. Screw terminals, DIN rail mount. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"174 mm","Width":"55 mm","at AC":"10 ... 18 ms","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.37","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"6 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 200 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","Auxiliary Switch":"No","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","at AC-3e maximum":"1 000 1/h","For Main Contacts":"18 ... 1","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Power contactor","at 24 V rated value":"6 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"7.5 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"40 A","at 50 Hz rated value":"230 V","at 500 V rated value":"2 A","at 600 V rated value":"41 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"3 hp","at 200/208 V rated value":"10 hp","at 220/230 V rated value":"15 hp","at 460/480 V rated value":"30 hp","at 575/600 V rated value":"40 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"6.6 W","at AC-2 at 400 V rated value":"18.5 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"35 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2014","Design Of The Surge Suppressor":"with varistor","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"52.8 A","at AC-5b up to 400 V rated value":"33.2 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 80A (690V,100kA), aM: 50A (690V,100kA), BS88: 63A (415V,80kA)","Without Load Current Share Typical":"16 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 160 A (690 V, 100 kA), aM: 80 A (690 V, 100 kA), BS88: 125 A (415 V, 80 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"2.2 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC","Limited To 1 S Switching At Zero Current Maximum":"843 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"596 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"400 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"241 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"196 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"16 mm²","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":"https://cdn.aoctrl.com/bf172a74d00518c44c3fcfb2ae7fb9d5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=230614&mlfb=3RT2035-1CP04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2035-1CP04/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT2035-1CP04 and how do I get a price?","answer":"The 3RT2035-1CP04 is available to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What are the key ratings of 3RT2035-1CP04?","answer":"The 3RT2035-1CP04 is a SIRIUS Size S2 power contactor rated 40 A at 480 V in AC-3 duty, with screw-type terminals, 55 mm width, and a switching frequency of 1 000 operations per hour in AC-3. Operating temperature range is -25 to +60 °C."},{"question":"Will 3RT2035-1CP04 drop into a panel specified around 3RT2024-1AL20-ZX95 without rewiring?","answer":"The 3RT2035-1CP04 is a Size S2 frame (55 mm wide) while the 3RT2024-1AL20-ZX95 is a different frame size. Panel fit depends on the existing DIN rail layout and terminal wiring; verify the mounting footprint and terminal compatibility before substitution."},{"question":"What compliance documentation is available for 3RT2035-1CP04?","answer":"As a Siemens SIRIUS product, the 3RT2035-1CP04 typically carries CE, UL, CSA, and CCC certifications. RoHS and REACH compliance declarations are available from Siemens. Specific approval markings should be verified against the unit's rating plate for the target jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2035-1CP04","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/3RT2035-1CP04 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}}