{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2335-8XE30-1NB3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2335-8XE30-1NB3","canonicalUrl":"https://aoctrl.com/siemens/3RA2335-8XE30-1NB3","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2335-8XE30-1NB3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, 3RA2335-8XE30-1NB3, S2 frame size, 18.5 kW at 400 V, 40 A at 480 V, 3-pole, screw-type terminals, varistor surge suppressor, DIN-rail mount.","salesMarkdown":"## S2 reversing assembly with built-in varistor The Siemens 3RA2335-8XE30-1NB3 is a SIRIUS reversing contactor assembly in the S2 frame size, combining two 3RT2035 contactors — one with a varistor surge suppressor (3RT2035-1NB30-0CC0) and one standard (3RT2035-1NB30) — on a common mounting plate. This pre-assembled unit saves panel space and wiring time compared to building a reversing starter from separate contactors and interlocks. The varistor across the coil suppresses switching transients, reducing EMI and extending contact life. ## Mounting and wiring constraints Snaps onto 35 mm standard mounting rail with screw fastening. Dimensions are 141 mm high, 120 mm wide, 130 mm deep. Clearance requirements: 10 mm upwards, 10 mm forwards, 10 mm sideways, 10 mm downwards, 0 mm backwards (–). The backwards zero clearance means the assembly can sit flush against the back panel — no extra air gap needed behind the DIN rail. Main circuit terminals accept 2x (1…35 mm²) solid or 1x (1…50 mm²). The coil operates on 20…33 V DC. ## Mechanical endurance and environmental range Typical mechanical life is 10,000,000 operations — sufficient for high-cycle reversing applications like conveyor shuttles or hoist direction changes. Shock resistance is 12g at 5 ms and 7g at 10 ms AC. The substance prohibitance date of 10/01/2014 indicates RoHS compliance from that date forward.","metaTitle":"Siemens 3RA2335-8XE30-1NB3 SIRIUS Reversing Contactor","metaDescription":"Siemens SIRIUS reversing contactor assembly 3RA2335-8XE30-1NB3, S2 frame, 18.5 kW at 400 V, 40 A at 480 V. DIN-rail mount, varistor suppression.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Motor Starters"],"specifications":{"Depth":"130 mm","Solid":"2x (1 ... 35 mm²), 1x (1 ... 50 mm²)","Width":"120 mm","at AC":"12g / 5 ms, 7g / 10 ms","at DC":"20 ... 33 V","title":"3RA2335-8XE30-1NB3","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, 20-33 V AC/DC, 50/60 Hz, screw terminal, electrical and mechanical interlock, auxiliary contacts: 2 x 1 NO, with voltage tap for 3RA27","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 500 V rated value":"22 kW","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":"3RT2035-1NB30-0CC0","2 Of The Supplied Contactor":"3RT2035-1NB30","at AC-4 at 400 V rated value":"18.5 kW","Substance Prohibitance (Date)":"10/01/2014","Design Of The Surge Suppressor":"with varistor","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","closing power of magnet coil at DC":"23 W","holding power of magnet coil at DC":"1 W","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":"0","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/DC","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/63c833b972c69f0e9ec66be51af5465b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=395951&mlfb=3RA2335-8XE30-1NB3"},"ai":{"faq":[{"question":"What are the power ratings for 3RA2335-8XE30-1NB3 at different voltages?","answer":"At 400 V AC-3 it is rated 18.5 kW. At 500 V it is 22 kW. At 690 V it is also 22 kW."},{"question":"What contactors are supplied inside this reversing assembly?","answer":"Two 3RT2035 contactors are included: one with varistor surge suppressor (3RT2035-1NB30-0CC0) and one standard (3RT2035-1NB30). One contactor per direction of rotation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2335-8XE30-1NB3","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/3RA2335-8XE30-1NB3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T00:18:55.296Z","lastPublished":"2026-07-21T00:18:55.296Z","indexable":true}}