{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2327-8XB30-1BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2327-8XB30-1BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2327-8XB30-1BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2327-8XB30-1BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, S0 size, 15 kW at 400 V AC-3, screw/snap-on 35 mm DIN rail, supplied with two 3RT2027-1BB40 contactors.","salesMarkdown":"The Siemens 3RA2327-8XB30-1BB4 is a SIRIUS reversing contactor assembly — a pre-assembled unit that mechanically and electrically interlock two contactors to reverse a three-phase motor without a separate reversing starter. It ships with two 3RT2027-1BB40 contactors and the reversing kit already integrated. The AC-3 duty class covers starting and switching off squirrel-cage motors under load — the typical reversing application on a conveyor, pump, or fan. The assembly mounts on 35 mm standard DIN rail via screw or snap-on fastening. At 480 V it carries 27 A, and at 690 V it delivers 18.5 kW — so the current limit, not the voltage, governs the motor size. For a 460/480 V supply, the 20 hp rating confirms it covers standard North American 20 hp reversing duty. Storage range is wider at -55 to +80 °C. The S0 contactor frame size is the physical footprint — 90 mm wide, 101 mm high, 107 mm deep — so check panel depth if mounting against a backplate. Main circuit terminals accept screw-type connections: 2x (1 to 2.5 mm²) solid or 2x (2.5 to 10 mm²) solid. For stranded, it takes 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). The AWG equivalent for main contacts is 2x (16 to 12) and 2x (14 to 8). That covers typical motor leads up to about 10 mm². The assembly includes two 3RT2027-1BB40 contactors and the 3RA2923-2AA1 reversing kit. If you're replacing a failed unit, verify that the supplied contactor coil matches your control voltage — the coil terminals are screw-type and rated at 24 V DC. The screw option adds vibration resistance in high-shock environments; the assembly is rated for 13.5 g at 5 ms on AC and 15 g at 5 ms on DC. Clearance around the unit: 6 mm upwards, forwards, and downwards; 0 mm backwards. That 6 mm gap to adjacent devices or enclosure walls is the minimum for airflow and wiring access. The assembly has one instantaneous auxiliary contact per direction of rotation, so if you need more feedback (e.g., separate run and fault signals), plan for an add-on auxiliary contact block.","metaTitle":"Siemens 3RA2327-8XB30-1BB4 SIRIUS Reversing Contactor Assemb","metaDescription":"Siemens SIRIUS reversing contactor assembly 3RA2327-8XB30-1BB4, S0 size, 15 kW at 400 V AC-3. Screw/snap-on DIN rail mount. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"107 mm","Solid":"2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)","Width":"90 mm","at AC":"13,5g / 5 ms, 8,3g / 10 ms","at DC":"15g / 5 ms, 10g / 10 ms","title":"3RA2327-8XB30-1BB4","Height":"101 mm","Upwards":"6 mm","Forwards":"6 mm","Backwards":"0 mm","Downwards":"6 mm","At The Side":"6 mm","description":"reversing contactor assembly, AC-3e/AC-3, 32 A, 15 kW / 400 V, 3-pole, 24 V DC, 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":"S0","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","at DC rated value":"24 V","Product Brand Name":"SIRIUS","Product Designation":"Reversing contactor assembly","Of Contactor Typical":"10 000 000","at 400 V rated value":"15 kW","at 480 V rated value":"27 A","at 500 V rated value":"15 kW","at 600 V rated value":"27 A","at 690 V rated value":"18.5 kW","Instantaneous Contact":"2","For Main Current Circuit":"screw-type terminals","at 220/230 V rated value":"10 hp","at 460/480 V rated value":"20 hp","at 575/600 V rated value":"25 hp","Per Direction Of Rotation":"1","1 Of The Supplied Contactor":"3RT2027-1BB40","2 Of The Supplied Contactor":"3RT2027-1BB40","at AC-4 at 400 V rated value":"11 kW","Substance Prohibitance (Date)":"10/01/2009","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","of the supplied RH assembly kit":"3RA2923-2AA1","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: 50 A","closing power of magnet coil at DC":"5.9 W","holding power of magnet coil at DC":"5.9 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","operating frequency at AC-3 maximum":"750 1/h","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 125 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":"75 %","Type Of Voltage Of The Control Supply Voltage":"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":"$215.90","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b661b81ea7d81788a7661c218316281c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=470803&mlfb=3RA2327-8XB30-1BB4"},"ai":{"faq":[{"question":"What is the closest functional alternative to this assembly?","answer":"The 3RT2028-1BB40 is a single contactor of the same S0 frame size, not a reversing assembly. To build a reversing starter from two 3RT2028-1BB40 units you would need a separate mechanical interlock kit and reversing wiring. The 3RA2327-8XB30-1BB4 includes both contactors and the interlock pre-assembled, so it drops in as a single unit."},{"question":"What compliance documentation is available for this part?","answer":"RoHS compliance is documented with a substance prohibition date of October 1, 2009. The SIRIUS series typically carries CE, UL, and CSA certifications, though specific approval marks for this order code should be verified against the nameplate."},{"question":"What are the main circuit terminal wire sizes?","answer":"Solid wire: 2x (1 to 2.5 mm²) and 2x (2.5 to 10 mm²). Stranded: 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²). AWG equivalents are 2x (16 to 12) and 2x (14 to 8) for main contacts."},{"question":"Will this assembly fit in a panel designed for a single 3RT2028-1BB40 contactor?","answer":"No. The 3RA2327-8XB30-1BB4 is 90 mm wide (two contactors side-by-side plus the reversing kit), while a single 3RT2028-1BB40 is narrower. You would need additional panel width and depth (107 mm) to accommodate the assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2327-8XB30-1BB4","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/3RA2327-8XB30-1BB4 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}}