{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3805-4BK00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3805-4BK00","canonicalUrl":"https://aoctrl.com/siemens/4EP3805-4BK00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3805-4BK00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EP3805-4BK00 commutating choke for converter, 3-phase, 400V AC, 55.8A rated / 62A max, 0.19mH, IP00, screw terminals.","salesMarkdown":"It limits current rise during commutation, reducing harmonic distortion and protecting the converter's semiconductors from di/dt stress. Rated for 400 V AC, 50 Hz line frequency, it carries a continuous rated current of 55.8 A with a thermal maximum of 62 A — sized for a drive output in that current class, not a motor FLA match. The 0.19 mH inductance and 1.6 % relative voltage drop at rated current are the key numbers for sizing: this choke is meant to work with a specific converter, not as a generic input reactor. The 55.8 A rated current (62 A max) is the continuous thermal rating at 40 °C ambient, thermal class B per IEC 60085 — that's an 80 °C temperature rise limit. If your cabinet ambient runs hotter, you derate. The 0.19 mH inductance at 50 Hz gives a 1.6 % voltage drop at rated current, which is a relatively low impedance; this choke smooths commutation notches without dropping much line voltage under load. The IP00 enclosure means it's an open-frame component — no finger protection, no drip shield. Mount it inside a cabinet, not on the wall. Screw terminals for the main circuit accept standard lug connections. ## Physical integration Footprint: 0.178 m wide × 0.153 m tall × 0.12 m deep. That's about 7 × 6 × 4.7 inches. It's a panel-mount component, not DIN-rail clip-on. Plan for screw-terminal access on the main circuit connections. The IP00 rating means it needs enclosure protection from the panel builder — no exposed live parts allowed in a touch-safe cabinet.","metaTitle":"Siemens 4EP3805-4BK00 Commutating Choke, 55.8A, 0.19mH","metaDescription":"Siemens 4EP3805-4BK00 3-phase commutating choke for converters. Rated 55.8A / 62A max, 0.19mH, 400V AC, IP00, screw terminals. Mature lifecycle, available to order. Request RFQ for","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":"62A","Rated Value":"55.8A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.00019H","Operating voltage rated value":"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":"1.6%"}},"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=13325&mlfb=4EP3805-4BK00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3805-4BK00/alternatives.json"},"ai":{"faq":[{"question":"What are the key electrical ratings for 4EP3805-4BK00?","answer":"3-phase, 400 V AC, 50 Hz. Rated current 55.8 A, maximum 62 A. Inductance 0.19 mH, relative voltage drop 1.6% at rated current. Thermal class B at 40 °C ambient."},{"question":"Where can I buy 4EP3805-4BK00 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What are the physical dimensions of 4EP3805-4BK00?","answer":"Width 0.178 m, height 0.153 m, depth 0.12 m. It is an open-frame (IP00) panel-mount component with screw terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3805-4BK00","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/4EP3805-4BK00 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}}