{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1035-1CP04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1035-1CP04","canonicalUrl":"https://aoctrl.com/siemens/3RT1035-1CP04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1CP04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1035-1CP04, size S2, 22 kW AC-3 at 500 V, screw-type terminals, DIN rail mount, IP20 front.","salesMarkdown":"It's rated 22 kW at 500 V under AC-3 duty (the standard motor-switching category per IEC 60947-4-1), so it handles typical induction motors on 480 V or 500 V lines without derating. The AC-2 rating of 18.5 kW at 400 V covers slip-ring motor or wound-rotor applications where starting current stays closer to running current. The mechanical life of 10 million operations means it'll outlast most machines if the coil and arc chamber stay clean. The 55 mm width and 112 mm height fit the S2 footprint — same hole pattern as other SIRIUS S2 contactors, so swapping one in doesn't mean redrilling the backplate. Side-by-side mounting is supported, so you can pack several on the same rail without a gap. Depth is 164 mm, which is the dimension you need to check for enclosure depth clearance — especially if there's a door-mounted disconnect or a shallow gland plate behind the rail. Terminals are screw-type, accepting 2x solid conductors up to 4 mm² or stranded up to 25 mm². That's generous for the 22 kW class; you can land a 10 mm² motor cable without a ferrule. ## Environmental and protection Front face is IP20, so finger-safe when installed in a closed panel. The terminal area is IP00 — exposed live parts once the wire is landed, which is normal for panel-mount contactors and expects an enclosure door interlock. The shock and vibration specs (15 g / 5 ms at AC, 8 g / 10 ms at DC) are what you'd expect for a contactor bolted to a panel in a machine tool or compressor skid.","metaTitle":"Siemens 3RT1035-1CP04 SIRIUS Contactor, 22 kW AC-3 at 500V","metaDescription":"Siemens 3RT1035-1CP04 SIRIUS power contactor, size S2, 22 kW AC-3 at 500V, screw terminals, DIN rail mount, IP20 front, active production.","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":"15g / 5 ms, 8g / 10 ms","at DC":"20 ... 25 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","Design Of The Surge Suppressor":"with varistor","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=485738&mlfb=3RT1035-1CP04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1035-1CP04/alternatives.json"},"ai":{"faq":[{"question":"How does the 3RT1035-1CP04 compare to the 3RT1036-1AB00?","answer":"The 3RT1036-1AB00 is a larger-frame SIRIUS contactor (size S3 vs S2). It carries higher AC-3 ratings — typically 30 kW at 400 V versus this part's 18.5 kW at 400 V AC-2 / 22 kW at 500 V AC-3. The 3RT1035-1CP04 is physically smaller (55 mm wide vs 70 mm), so it won't drop into a panel drilled for the S3 footprint without adapter plate work."},{"question":"What conductor sizes does the 3RT1035-1CP04 accept?","answer":"Screw terminals accept 2x solid conductors from 0.5 to 4 mm², or stranded from 0.75 to 25 mm². For the main power circuit, 2x stranded up to 16 mm² is also listed."},{"question":"What compliance documentation is available for this contactor?","answer":"RoHS and REACH compliance is indicated, with a substance prohibitance date of May 1, 2012. The product is CE-marked under the SIRIUS series; UL/CSA listings are standard for this class but not explicitly listed in the record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1035-1CP04","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/3RT1035-1CP04 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}}