{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2328-8XE30-1BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2328-8XE30-1BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2328-8XE30-1BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2328-8XE30-1BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, S0 size, 38 A at 480 V AC-3, 18.5 kW at 400 V, 24 VDC coil, screw-type terminals, snap-on 35 mm DIN rail.","salesMarkdown":"## What this assembly delivers — and what it fits The Siemens 3RA2328-8XE30-1BB4 is a SIRIUS reversing contactor assembly in the S0 frame, rated at 38 A in AC-3 duty at 480 V and 18.5 kW at 400 V — meaning it handles reversing motor loads up to that current without external interlocks. The coil is 24 VDC, screw-type terminals on both the magnet coil and main circuit. The assembly ships with two contactors already fitted: a 3RT2028-1BB40-0CC0 and a 3RT2028-1BB40, plus the mechanical interlock kit 3RA2923-2AA1. That means it arrives ready to wire into a panel — no separate interlock sourcing, no alignment fiddling. The S0 footprint (90 mm wide, 101 mm high, 107 mm deep) fits the common panel layout; spacing to adjacent devices is 6 mm upward, forward, downward, and to the side, with zero clearance needed behind. ## Sizing and duty — AC-3 vs AC-4 The headline AC-3 rating (38 A at 480 V, 18.5 kW at 400 V) is for standard squirrel-cage motor starting — the common case. For heavy-duty reversing or plugging duty (AC-4), the rating drops to 11 kW at 400 V. If your application involves frequent inching or reversing under load, size against the AC-4 figure, not the AC-3 number. ## Wiring and terminal detail Main circuit terminals accept solid conductors: 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: 2x (16 to 12) and 2x (14 to 8). All screw-type — no spring-cage on this variant.","metaTitle":"Siemens 3RA2328-8XE30-1BB4 reversing contactor, 38 A","metaDescription":"Siemens SIRIUS reversing contactor assembly 3RA2328-8XE30-1BB4, 38 A AC-3 at 480 V, 18.5 kW at 400 V, 24 VDC coil, screw terminals, S0 size, snap-on DIN rail.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","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","Height":"101 mm","Upwards":"6 mm","Forwards":"6 mm","Backwards":"0 mm","Downwards":"6 mm","At The Side":"6 mm","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":"18.5 kW","at 480 V rated value":"34 A","at 500 V rated value":"18.5 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":"25 hp","at 575/600 V rated value":"25 hp","Per Direction Of Rotation":"1","1 Of The Supplied Contactor":"3RT2028-1BB40-0CC0","2 Of The Supplied Contactor":"3RT2028-1BB40","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 RS 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":null,"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=155336&mlfb=3RA2328-8XE30-1BB4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2328-8XE30-1BB4/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the Siemens 3RA2328-8XE30-1BB4 reversing contactor assembly?","answer":"This assembly is sourced to order; availability and pricing are confirmed at quote time. Contact our sales team for current lead time and pricing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2328-8XE30-1BB4","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/3RA2328-8XE30-1BB4 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}}