{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4551-0AG10-0B","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4551-0AG10-0B","canonicalUrl":"https://aoctrl.com/siemens/4EU4551-0AG10-0B","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4551-0AG10-0B","rawCanonicalId":null},"summary":{"shortDescription":"SIDAC SIDAC output reactor, 4EU4551-0AG10-0B, 3-phase, 745 A at 50 Hz, 0.079 mH, IP00, flat-type terminals.","salesMarkdown":"The SIDAC 4EU4551-0AG10-0B is a three-phase output reactor — a choke that sits between a variable-frequency drive and the motor to smooth the PWM waveform, limit voltage spikes, and reduce bearing currents. It's rated for a continuous 745 A at 50 Hz, with an inductance of 0.079 mH and an impedance voltage (uk) of 8%. The 745 A figure is the thermal maximum (Ithmax) at 40°C ambient, so that's the number to use for continuous-duty sizing. For a junior on the panel: if your drive's output current stays under 745 A at 40°C, this reactor can handle it without derating. The 745 A continuous rating at 40°C ambient tells you this is a large-frame reactor — sized for a drive feeding a motor in the 400–500 kW range on 400 V three-phase. The 0.079 mH inductance is relatively low, which means it's designed for high-current, low-impedance motor circuits where you mainly want to limit dv/dt and reflected-wave effects on longer cable runs, not add significant line impedance. Total power loss is 1083 W (671 W coil + 412 W iron core), so factor that into your enclosure ventilation — at that dissipation, forced airflow or a larger cabinet is needed. Class H insulation (180°C thermal class per IEC 60085) gives good margin for high-ambient or overload conditions. IP00 protection class. Flat-type terminals for main circuit connections. Dimensions: 0.46 m wide × 0.43 m tall × 0.29 m deep.","metaTitle":"SIDAC 4EU4551-0AG10-0B Output Reactor, 745 A, 0.079 mH","metaDescription":"SIDAC 4EU4551-0AG10-0B output reactor, 3-phase, 745 A at 50 Hz, 0.079 mH, Class H insulation, IP00, flat-type 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":"0.29m","Width":"0.46m","Height":"0.43m","Maximum":"745A","Minimum":"0Hz","Rated Value":"1 250Hz","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product brand name":"SIDAC","Product designation":"output reactor","Protection class IP":"IP00","Inductivity rated value":"0.000079H","Power loss [W] of the coil":"671W","Ambient temperature rated value":"40°C","Power loss [W] of the iron core":"412W","Thermal class acc. to IEC 60085":"H","Type of electrical connection for main current circuit":"flat connector"}},"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=430718&mlfb=4EU4551-0AG10-0B","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4551-0AG10-0B/alternatives.json"},"ai":{"faq":[{"question":"What are the physical dimensions of 4EU4551-0AG10-0B?","answer":"Width 0.46 m, height 0.43 m, depth 0.29 m. It's a large IP00 block meant for panel mounting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4551-0AG10-0B","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/4EU4551-0AG10-0B 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}}