{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4521-0AM00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4521-0AM00","canonicalUrl":"https://aoctrl.com/siemens/4EU4521-0AM00","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4521-0AM00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4521-0AM00 commutating choke for converter, 3-phase, 575V AC, 1300A rated, 0.031mH, IP00, flat-type terminals.","salesMarkdown":"The Siemens 4EU4521-0AM00 is a 3-phase commutating choke for converter applications, rated 1300 A at 575 V AC with an inductance of 0.031 mH. This is a high-current line reactor sized for the DC link or AC input side of a large drive or rectifier — the 1300 A continuous rating places it in heavy industrial territory, typically feeding a multi-megawatt drive system or a large electrolysis / furnace supply. IP00 enclosure means it is an open-frame component intended for installation inside a ventilated cabinet or a dedicated converter cubicle — not for standalone floor mounting. The flat-type terminals accept busbar or heavy cable lugs, not DIN-rail terminal blocks. The 1300 A rated current is the continuous thermal rating at 40 °C ambient. For a 575 V AC 3-phase system, that works out to roughly 1.15 MVA of throughput — so this choke is sized for a drive in the 800–1000 kW range, depending on the converter topology and overload profile. The DC-side rating is 1593.1 A, which matches the √2 × AC rating relationship typical for 6-pulse rectifier chokes. Power loss splits into 700 W in the coil and 404 W in the iron core. That heat must be ventilated out of the enclosure. Thermal class H per IEC 60085 means the insulation system is rated for 180 °C hot-spot temperature. That gives generous headroom above the 40 °C ambient — the choke can tolerate brief overloads or higher ambient without immediate failure, though continuous operation above 40 °C still requires derating per the manufacturer's curve. ## Physical integration Footprint is 0.46 m wide × 0.435 m tall × 0.293 m deep. That is a substantial component; plan for a dedicated mounting plate or chassis bracket. Operating frequency is 50/60 Hz. The choke is designed for line-frequency operation; do not use it on the output side of a PWM drive (carrier frequency) — the iron losses will spike and the inductance value will shift.","metaTitle":"4EU4521-0AM00 Commutating Choke, 1300A, 575V AC, IP00","metaDescription":"Siemens 4EU4521-0AM00 commutating choke for converters. 3-phase, 1300A rated, 575V AC, 0.031mH. IP00. Mature lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.293m","Width":"0.46m","Height":"0.435m","Maximum":"1 300A","Rated Value":"1 300A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"1 593.1A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.000031H","Power loss [W] of the coil":"700W","Operating voltage rated value":"575, 575V","Ambient temperature rated value":"40°C","Operating frequency rated value":"60 ... 50Hz","Power loss [W] of the iron core":"404W","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=215861&mlfb=4EU4521-0AM00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4521-0AM00/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4521-0AM00","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/4EU4521-0AM00 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}}