{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4551-0AB00-0B","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4551-0AB00-0B","canonicalUrl":"https://aoctrl.com/siemens/4EU4551-0AB00-0B","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4551-0AB00-0B","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4551-0AB00-0B Netzdrossel f. FU, 3-phase mains choke, 140 A rated current, 500 V AC, 50 Hz, 1.7 mH inductance, 18.6% voltage drop, IP00, Class H insulation, flat-type terminals.","salesMarkdown":"The 4EU4551-0AB00-0B is a three-phase mains choke (Netzdrossel f. FU) designed for the input side of a frequency converter. It sits between the supply and the drive rectifier to smooth current, limit harmonics, and reduce the stress on the DC-link capacitors. Rated 140 A continuous at 500 V AC, 50 Hz, with an inductance of 1.7 mH and a relative inductive voltage drop of 18.6% at rated current. This is an open-frame (IP00) component — no enclosure, no touch protection. It mounts into a panel or cabinet where the surrounding switchgear provides the physical guard. The flat-type terminals accept busbar or cable lugs; expect to land the power conductors with ring or fork terminals sized for the 140 A circuit. The 140 A rating is the thermal maximum continuous current (Ithmax) at 50 °C ambient. That is the number you match to the drive's input current, not the motor's full-load amps — the choke sees the rectified line current, which can be higher than the motor FLA depending on the drive topology and load profile. Class H insulation (180 °C thermal class per IEC 60085) gives headroom for overloads and elevated cabinet temperatures without derating prematurely. The 18.6% voltage drop at rated current is the impedance contribution at line frequency. For most variable-frequency drive applications, a choke with 3–5% impedance is typical; this 18.6% figure is unusually high, meaning the choke will drop significant voltage under load. Verify that the drive's DC-link can tolerate the reduced input voltage — especially on 400 V nominal systems where the 500 V rating leaves less headroom. If the line voltage sags, the choke's drop may push the DC bus below the drive's undervoltage threshold. Dimensions: 460 mm wide, 435 mm high, 293 mm deep. That is a substantial footprint — plan for a mounting plate area roughly 460 × 435 mm, with clearance above and below for the flat-type terminal connections. The IP00 rating means no drip shield or dust cover; locate it away from washdown zones or condensation paths inside the enclosure.","metaTitle":"Siemens 4EU4551-0AB00-0B Mains Choke for Drive, 140 A, 500 V","metaDescription":"Siemens 4EU4551-0AB00-0B mains choke for frequency converter (Netzdrossel f. FU). 3-phase, 140 A rated, 500 V AC, 50 Hz, 1.7 mH, 18.6% voltage drop. IP00 open-frame, Class H insula","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":"140A","Rated Value":"140A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel f. FU","Protection class IP":"IP00","Inductivity rated value":"0.0017H","Operating voltage rated value":"500V","Ambient temperature rated value":"50°C","Operating frequency rated value":"50Hz","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":"18.6%"}},"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=39058&mlfb=4EU4551-0AB00-0B","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4551-0AB00-0B/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EU4551-0AB00-0B and get a price?","answer":"This part is sourced to order against an RFQ. Submit a request through the storefront; we will confirm current availability and pricing for your required quantity and delivery window."},{"question":"What are the key ratings for 4EU4551-0AB00-0B?","answer":"Three-phase, 140 A continuous, 500 V AC, 50 Hz, 1.7 mH inductance, 18.6% voltage drop at rated current, IP00 open-frame, Class H insulation, flat-type terminals."},{"question":"What compliance documentation is available for 4EU4551-0AB00-0B?","answer":"The manufacturer's standard documentation includes the product datasheet and a declaration of conformity to applicable EU directives. Specific certifications (UL, CSA, RoHS, REACH) are not listed in the available product data and should be confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4551-0AB00-0B","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/4EU4551-0AB00-0B 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}}