{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3805-3BK00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3805-3BK00","canonicalUrl":"https://aoctrl.com/siemens/4EP3805-3BK00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3805-3BK00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EP3805-3BK00 commutating choke (line reactor) for converter applications, 3-phase, 400 V AC, 13 A rated current, 14.5 A max, 3.05 mH, screw terminals, IP00.","salesMarkdown":"The 3.05 mH inductance and 6% relative inductive voltage drop smooth current ripple and limit di/dt on the converter's input — critical for protecting the DC-link capacitors and reducing harmonic injection back to the line. This means the choke can carry its rated load indefinitely without exceeding the insulation temperature limit — no derating needed at 40 °C, but above that you'll need to reduce current per the insulation class curve. The 6% impedance (relative inductive voltage drop) is typical for input line reactors; it limits fault current and reduces harmonics enough to meet most drive-system recommendations without excessive voltage drop at full load. The screw-type terminals accept standard power wiring; plan for adequate clearance to grounded metalwork per IEC 61558-2-20. Commutating chokes (line reactors) sit between the AC supply and a variable-frequency drive, servo drive, or DC converter input. They attenuate voltage notches, limit inrush current, and reduce harmonic distortion — particularly important on weak grids or when multiple drives share a common bus. The 0... 50 Hz operating frequency covers standard 50 Hz line applications; at 50 Hz the 3.05 mH inductance delivers the stated 6% drop.","metaTitle":"Siemens 4EP3805-3BK00 Commutating Choke, 13A, 400V AC, 3-Pha","metaDescription":"Siemens 4EP3805-3BK00 commutating choke for converters. 3-phase, 400V AC, 13A rated, 14.5A max. IP00, screw terminals. Mature lifecycle; sourced to order. Request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.12m","Width":"0.178m","Height":"0.153m","Maximum":"14.5A","Rated Value":"13A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"17.7A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.0031H","Operating voltage rated value":"0, 400V","Ambient temperature rated value":"40°C","Operating frequency rated value":"0 ... 50Hz","Thermal class acc. to IEC 60085":"B","Type of electrical connection for main current circuit":"screw-type terminals","Relative inductive drop in voltage on the measurement level current, voltage and frequency":"6%"}},"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=58458&mlfb=4EP3805-3BK00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3805-3BK00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 4EP3805-3BK00 and how is it quoted?","answer":"We source the 4EP3805-3BK00 to order against an RFQ. Availability and current pricing are confirmed at quote time through our independent distribution network."},{"question":"What are the key specifications of the 4EP3805-3BK00?","answer":"It is a 3-phase commutating choke rated for 400 V AC, 13 A continuous (14.5 A max), with 3.05 mH inductance and 6% relative inductive voltage drop. It uses screw terminals, is rated IP00, and conforms to thermal class B at 40 °C ambient."},{"question":"What compliance documentation is available for the 4EP3805-3BK00?","answer":"The part is UL/CSA-recognized and designed per EN 61558-2-20. Standard documentation includes the manufacturer's declaration of conformity and datasheet."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3805-3BK00","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/4EP3805-3BK00 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}}