{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2335-8XB30-1AK6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2335-8XB30-1AK6","canonicalUrl":"https://aoctrl.com/siemens/3RA2335-8XB30-1AK6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2335-8XB30-1AK6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, 3RA2335-8XB30-1AK6, S2 frame, 18.5 kW at 400 V, screw and snap-on 35 mm DIN rail mounting.","salesMarkdown":"The Siemens 3RA2335-8XB30-1AK6 is a SIRIUS reversing contactor assembly — a pre-wired pair of contactors with mechanical interlock for reversing motor direction. The mechanical interlock prevents both contactors from closing simultaneously — a requirement for any reversing starter. That figure governs the maintenance interval: expect the contactor pair to outlast most conveyor or pump applications before replacement. The -25 °C floor is the limit for cold-start applications like outdoor compressor houses; below that, pre-heat the enclosure. Minimum clearance: 10 mm upwards, forwards, downwards, and sideways; 0 mm backwards — can sit flush against the back panel. For a field-service swap, verify the existing contactor orientation matches before torqueing the rail clips. Because it ships with two 3RT2035-1AK60 contactors, the assembly is a drop-in replacement for any panel originally specified with those individual contactors plus a reversing interlock kit. No rewiring of the main power circuit is needed if the existing contactor footprint matches the S2 frame.","metaTitle":"Siemens 3RA2335-8XB30-1AK6 SIRIUS Reversing Contactor Assemb","metaDescription":"Siemens SIRIUS reversing contactor assembly, 18.5 kW at 400 V AC-3. Screw/snap-on 35 mm DIN rail mount. Active production. RFQ for lead time.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"130 mm","Solid":"2x (1 ... 35 mm²), 1x (1 ... 50 mm²)","Width":"120 mm","at AC":"18.5g / 5 ms, 11.6g / 10 ms","title":"3RA2335-8XB30-1AK6","Height":"141 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.36","at 60 Hz":"0.39","Backwards":"0 mm","Downwards":"10 mm","At The Side":"10 mm","description":"reversing contactor assembly, AC-3e/AC-3, 41 A, 18.5 kW / 400 V, 3-pole, 110 V AC, 50 Hz / 120 V, 60 Hz, screw terminal, electrical and mechanical interlock, auxiliary contacts: 2 x 1 NO","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-3 maximum":"1 000 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","at AC-3e maximum":"1 000 1/h","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":"Reversing contactor assembly","Of Contactor Typical":"10 000 000","at 400 V rated value":"18.5 kW","at 480 V rated value":"40 A","at 50 Hz rated value":"110 V","at 500 V rated value":"22 kW","at 60 Hz rated value":"120 V","at 600 V rated value":"41 A","at 690 V rated value":"22 kW","Instantaneous Contact":"2","For Main Current Circuit":"screw-type terminals","at 220/230 V rated value":"15 hp","at 460/480 V rated value":"30 hp","at 575/600 V rated value":"40 hp","Per Direction Of Rotation":"1","1 Of The Supplied Contactor":"3RT2035-1AK60","2 Of The Supplied Contactor":"3RT2035-1AK60","at AC-3 rated value maximum":"690 V","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"18.5 kW","Substance Prohibitance (Date)":"10/01/2014","at AWG cables for main contacts":"2x (18 ... 2), 1x (18 ... 1)","of the supplied RS assembly kit":"3RA2933-2AA1","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","Product Function Bus Communication":"Yes","With Type Of Assignment 2 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 80 A","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 160 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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 error per 100 million operating cycles","with low demand rate according to SN 31920":"40 %","protocol is supported AS-Interface protocol":"No","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","product function control circuit interface with IO link":"No","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$679.21","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/78071bc2faacec6647a847a95aa87dba.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=438791&mlfb=3RA2335-8XB30-1AK6"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"Width is 120 mm, height is 141 mm, and depth is 130 mm. Minimum clearance is 10 mm on all sides except backwards (0 mm)."},{"question":"What wire sizes does the main circuit accept?","answer":"The main current circuit terminals accept solid conductors: 2x (1 to 35 mm²) and 1x (1 to 50 mm²)."},{"question":"Does this assembly replace a panel built with 3RT2027-1AK64-3MA0 contactors?","answer":"No — this assembly uses two S2-frame 3RT2035-1AK60 contactors. The 3RT2027 contactors are a different frame size (S0). The DIN-rail footprint and wiring terminals differ; a direct drop-in is not possible without rewiring the main power circuit."},{"question":"What compliance documentation is available?","answer":"As a Siemens SIRIUS product, the assembly carries CE marking for the European market and is designed to meet IEC/EN 60947-4-1 standards for contactors and motor starters. RoHS and REACH compliance declarations are provided by Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2335-8XB30-1AK6","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/3RA2335-8XB30-1AK6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}