{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2335-8XB30-1AC2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2335-8XB30-1AC2","canonicalUrl":"https://aoctrl.com/siemens/3RA2335-8XB30-1AC2","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2335-8XB30-1AC2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, order code 3RA2335-8XB30-1AC2, S2 frame, 18.5 kW at 400 V AC-3, 24 V 50/60 Hz coil, screw terminals, supplied with two 3RT2035-1AG20 contactors.","salesMarkdown":"## Reversing contactor assembly for 3-phase motor reversing The Siemens 3RA2335-8XB30-1AC2 is a factory-assembled reversing contactor assembly from the SIRIUS family, designed to reverse a three-phase motor by mechanically interlocking two contactors so only one can close at a time. It ships with two 3RT2035-1AG20 contactors already mounted and wired on a common base plate, saving panel-build time and eliminating the risk of incorrect interlock wiring. Rated at 18.5 kW at 400 V AC-3 (40 A at 480 V, 41 A at 600 V), it handles reversing duty on pumps, conveyors, and other three-phase induction motors up to that power class. The 24 V 50/60 Hz coil draws 0.36 A at 50 Hz and 0.39 A at 60 Hz, so the control transformer must be sized accordingly. The S2 frame measures 141 mm high by 120 mm wide by 130 mm deep, leaving clearance of 10 mm upward, downward, and to the sides, and 0 mm backward — meaning it can sit flush against the panel back wall. Main current circuit terminals are screw-type, accepting solid conductors from 1 to 35 mm² (two per pole) and up to 50 mm² for a single conductor. The magnet coil also uses screw terminals, with a separate set of terminals for the auxiliary contacts — two instantaneous contacts are built in.","metaTitle":"Siemens 3RA2335-8XB30-1AC2 SIRIUS reversing contactor","metaDescription":"Siemens SIRIUS 3RA2335-8XB30-1AC2 reversing contactor assembly, 18.5 kW at 400 V AC-3, 24 V coil. Active production. Sourced to order against RFQ.","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":"3RA2335-8XB30-1AC2","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, 24 V AC, 50/60 Hz, screw terminal, electrical and mechanical interlock, auxiliary contacts: 2 x 1 NO","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail","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":"24 V","at 500 V rated value":"22 kW","at 60 Hz rated value":"24 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":"3RT2035-1AG20","2 Of The Supplied Contactor":"3RT2035-1AG20","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","operating frequency at AC-3 maximum":"1 000 1/h","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","operating voltage at AC-3 rated value maximum":"690 V","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/11f836afd52cfe54c8bfa9719e80cd3d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=697089&mlfb=3RA2335-8XB30-1AC2"},"ai":{"faq":[{"question":"Where can I buy 3RA2335-8XB30-1AC2 available via RFQ confirmation?","answer":"This reversing contactor assembly is sourced to order against your RFQ. Availability and pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2335-8XB30-1AC2","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/3RA2335-8XB30-1AC2 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}}