{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3400-0AK00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3400-0AK00","canonicalUrl":"https://aoctrl.com/siemens/4EP3400-0AK00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3400-0AK00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EP3400-0AK00 mains choke (Netzdrossel), 400V AC, 50Hz, 6.3A rated (7A max), 3-phase, 2.5mH, IP00, screw-type/tab terminals, thermal class B.","salesMarkdown":"The Siemens 4EP3400-0AK00 is a 3-phase mains choke (Netzdrossel) rated for 400 V AC at 50 Hz, with a rated current of 6.3 A and a maximum of 7 A. Its 2.5 mH inductance limits harmonic currents and reduces voltage notching on the line side of a variable-frequency drive or rectifier. The relative inductive voltage drop is 2.4% at the rated operating point, which keeps the DC-link voltage within expected margins for a standard 400 V three-phase supply. The IP00 rating means it is open-frame — no enclosure protection against dust or moisture — so it must be installed inside a cabinet that provides the required system IP rating. Ambient temperature is rated at 50 °C, with thermal class B insulation per IEC 60085. Total power loss is the sum of coil loss (20.8 W) and iron-core loss (6.95 W), so roughly 28 W of heat must be dissipated inside the enclosure. That figure drives the cabinet ventilation or cooling requirement, not the load current alone. ## Key electrical ratings and their meaning for selection The 6.3 A rated current (7 A maximum) is the continuous RMS current the choke can carry at 50 °C ambient without exceeding thermal class B limits. The 2.4% relative inductive voltage drop means that at rated current the choke drops about 9.6 V line-to-line (2.4% of 400 V). That is a typical value for a line reactor sized to protect a drive's input rectifier without collapsing the DC bus under load. The 2.5 mH inductance per phase is the value that determines the attenuation of harmonic currents at the switching frequency. For a 50 Hz line, this choke presents an impedance of about 0.785 Ω per phase at 50 Hz, rising proportionally with frequency to suppress higher-order harmonics from a 6-pulse rectifier.","metaTitle":"Siemens 4EP3400-0AK00 Mains Choke, 400V 50Hz 6.3A 3-Phase","metaDescription":"Siemens 4EP3400-0AK00 mains choke (Netzdrossel), 400V AC, 50Hz, 6.3A rated, 7A max, 3-phase. IP00, screw/tab terminals. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.073m","Width":"0.124m","Height":"0.122m","Maximum":"7A","Rated Value":"6.3A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel","Protection class IP":"IP00","Inductivity rated value":"0.0025H","Power loss [W] of the coil":"20.8W","Operating voltage rated value":"400V","Ambient temperature rated value":"50°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"6.95W","Thermal class acc. to IEC 60085":"B","Type of electrical connection for main current circuit":"screw-type terminals / tab terminals","Relative inductive drop in voltage on the measurement level current, voltage and frequency":"2.4%"}},"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=145236&mlfb=4EP3400-0AK00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3400-0AK00/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3400-0AK00","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/4EP3400-0AK00 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}}