{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2346-8XB30-1NB3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2346-8XB30-1NB3","canonicalUrl":"https://aoctrl.com/siemens/3RA2346-8XB30-1NB3","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2346-8XB30-1NB3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, S3 size, order code 3RA2346-8XB30-1NB3, rated 45 kW at 400 V AC-3, 75 hp at 460/480 V, screw and snap-on 35 mm DIN rail mounting.","salesMarkdown":"The Siemens 3RA2346-8XB30-1NB3 is a pre-assembled SIRIUS reversing contactor assembly, size S3, that combines two 3RT2046-1NB30 contactors with mechanical interlocking in one package. It reverses a three-phase motor by swapping two phases, controlled via a single coil circuit. Rated at 45 kW at 400 V AC-3 (75 hp at 460/480 V), it handles the full motor current in both directions without external wiring of the reversing pair. The S3 footprint measures 150 mm wide by 160 mm tall by 152 mm deep — allow 10 mm clearance above, below, and to the sides for airflow and wiring access; zero clearance needed at the rear. Main power circuit and coil connections use screw-type terminals. Each pole accepts two conductors: solid or stranded 0.5–1.5 mm² or 0.75–2.5 mm². The coil draws 3.1 VA at both 50 and 60 Hz, operates on 20–33 V DC, and is rated for 850 switching cycles per hour at AC-3 maximum load.","metaTitle":"Siemens 3RA2346-8XB30-1NB3 SIRIUS Reversing Contactor Assemb","metaDescription":"Siemens SIRIUS reversing contactor assembly, S3 size, rated 45 kW at 400 V AC-3, 75 hp at 460/480 V. Screw & snap-on 35 mm DIN rail mount. Current production. RFQ for pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"152 mm","Width":"150 mm","at AC":"10.6 g / 5 ms, 6.3 g / 10 ms","at DC":"20 ... 33 V","Height":"160 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"3.1 VA","at 60 Hz":"3.1 VA","Backwards":"0 mm","Downwards":"10 mm","At The Side":"10 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-3 maximum":"850 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":"850 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":"S3","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":"45 kW","at 480 V rated value":"96 A","at 500 V rated value":"55 kW","at 600 V rated value":"77 A","at 690 V rated value":"75 kW","Instantaneous Contact":"2","For Main Current Circuit":"screw-type terminals","at 200/208 V rated value":"30 hp","at 220/230 V rated value":"30 hp","at 460/480 V rated value":"75 hp","at 575/600 V rated value":"75 hp","Per Direction Of Rotation":"1","1 Of The Supplied Contactor":"3RT2046-1NB30","2 Of The Supplied Contactor":"3RT2046-1NB30","at AC-3 rated value maximum":"1 000 V","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"45 kW","Substance Prohibitance (Date)":"03/01/2017","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (10 ... 1/0), 1x (10 ... 2/0)","of the supplied RS assembly kit":"3RA2943-2AA1","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: 160 A","closing power of magnet coil at DC":"76 W","holding power of magnet coil at DC":"1.8 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 355 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","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (10 ... 35 mm²), 1x (10 ... 50 mm²)","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","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2f47b8ac97507d51fb4714968e8f3f18.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629712&mlfb=3RA2346-8XB30-1NB3","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2346-8XB30-1NB3/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor ratings for this reversing contactor?","answer":"Rated 45 kW at 400 V AC-3, 55 kW at 500 V, 75 kW at 690 V. In horsepower: 30 hp at 200/208 V and 220/230 V, 75 hp at 460/480 V and 575/600 V. Current rating at 480 V is 96 A, at 600 V is 77 A."},{"question":"What contactors are supplied inside this assembly?","answer":"Two Siemens 3RT2046-1NB30 contactors, one per direction of rotation. They are mechanically interlocked to prevent simultaneous closure."},{"question":"Does this part have any special mounting restrictions?","answer":"It mounts on 35 mm DIN rail with screw or snap-on fastening. The assembly can be rotated ±180° on a vertical surface, or tilted ±22.5° forward/backward. Allow 10 mm clearance on all sides except the rear (0 mm)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2346-8XB30-1NB3","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/3RA2346-8XB30-1NB3 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}}