{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4321-0BA00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4321-0BA00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU4321-0BA00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4321-0BA00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4321-0BA00-0A commutating choke for converter, 3-phase, 690V AC, 710A max, 639A rated, 68 µH, IP00, flat-type terminal.","salesMarkdown":"The 710 A maximum current and 639 A rated current define the thermal capacity — this choke is built for high-current three-phase converter feeds, not small servo drives. The 690 V AC rated voltage matches standard 400 V and 690 V industrial grids; the 4% voltage drop at rated current is typical for line reactors sized to limit harmonics and inrush without excessive voltage sag. Power loss splits between coil (480 W) and iron core (331 W), so the total 811 W must be vented from the enclosure — IP00 means no enclosure protection, so it's intended for installation inside a cabinet with forced or natural airflow. Thermal class H per IEC 60085 means the insulation system withstands 180 °C hot-spot temperature, giving headroom in high-ambient environments (rated ambient 40 °C). The flat-type terminal connection is a bus-bar style lug — not a screw terminal or spring cage — so panel builders need to plan for bolted connections, not DIN-rail wiring. This choke sits on the AC line side of a converter or drive, between the supply and the rectifier input. At 710 A and 690 V, it's sized for large-frame drives in the 400–500 kW range on a 400 V grid, or higher on 690 V. The 0.265 m depth, 0.46 m width, and 0.435 m height mean it occupies a significant footprint in the cabinet — not a panel-mount component but a floor-mount or chassis-mount reactor requiring structural support and clearance for airflow and bus-bar routing.","metaTitle":"Siemens 4EU4321-0BA00-0A Commutating Choke, 710A, 690V AC, 3","metaDescription":"Siemens 4EU4321-0BA00-0A commutating choke for converter, 3-phase, 690V AC, 710A max, 639A rated, 68 µH, IP00, flat terminal. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.265m","Width":"0.46m","Height":"0.435m","Maximum":"710A","Rated Value":"639A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"870A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.000068H","Power loss [W] of the coil":"480W","Operating voltage rated value":"690V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"331W","Thermal class acc. to IEC 60085":"H","Type of electrical connection for main current circuit":"flat connector","Relative inductive drop in voltage on the measurement level current, voltage and frequency":"4%"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=259319&mlfb=4EU4321-0BA00-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4321-0BA00-0A/alternatives.json"},"ai":{"faq":[{"question":"What are the key electrical ratings of 4EU4321-0BA00-0A?","answer":"It is a three-phase commutating choke rated 690 V AC at 50 Hz, with a maximum current of 710 A, a rated current of 639 A, and an inductance of 68 µH. The relative inductive voltage drop is 4% at rated current."},{"question":"Where can I buy 4EU4321-0BA00-0A and how is it quoted?","answer":"This part is sourced through independent distribution channels. It is quoted to order against an RFQ; availability and current pricing are confirmed at the time of quote."},{"question":"What are the physical dimensions of 4EU4321-0BA00-0A?","answer":"The choke measures 0.265 m depth, 0.46 m width, and 0.435 m height. It is an IP00 open-frame component with flat-type terminals for bus-bar connection."},{"question":"Will 4EU4321-0BA00-0A drop into a panel designed for 3RV6011-0CA10?","answer":"No — the 3RV6011-0CA10 is a 45 mm wide DIN-rail motor-protective circuit breaker rated 0.25 A, while this choke is a 460 mm wide, 710 A line reactor with flat-type terminals. They serve entirely different functions and mounting schemes; no direct panel swap is possible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4321-0BA00-0A","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/4EU4321-0BA00-0A 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}}