{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU3951-7UA00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU3951-7UA00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU3951-7UA00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU3951-7UA00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU3951-7UA00-0A mains choke for VFD, 3-phase AC, 500V, 710A max, 50Hz, 4% voltage drop, IP00, flat-type terminals, UL/CSA recognized.","salesMarkdown":"The Siemens 4EU3951-7UA00-0A is a three-phase mains choke rated for 500 V AC at 50 Hz, with a maximum continuous current of 710 A and a rated operational current of 639 A. The 710 A maximum current is the thermal limit at 40 °C ambient — derate above that. The 639 A operational current is the continuous rating under the 50 Hz fundamental. The 0.051 mH inductance is low enough for high-current drives; a higher-inductance choke would drop more voltage and may not be needed if the line impedance is already decent. The 540 W coil loss plus 192 W iron loss means the choke dissipates about 732 W total at rated load — that's heat that stays in the enclosure, so factor it into your panel cooling. Thermal class H means the winding insulation can survive 180 °C hot-spot, which is generous for a choke that normally runs cooler; it gives headroom for overloads. IP00 means no enclosure — this is an open-frame choke meant for a cabinet, not a standalone box. The flat-type terminals are heavy-duty bus-bar lugs, not screw clamps; you'll need to bolt on ring-tongue lugs or bus bars sized for 710 A. Dimensions are 0.41 m wide by 0.385 m tall by 0.229 m deep — it's a substantial block, roughly 16 by 15 by 9 inches. Plan for adequate clearance around it for airflow; the 732 W dissipation won't vent well if it's jammed against other gear.","metaTitle":"Siemens 4EU3951-7UA00-0A Mains Choke, 710A 500V 50Hz","metaDescription":"Siemens 4EU3951-7UA00-0A mains choke for VFD, 3-phase, 500V AC, 710A max, 50Hz, 4% voltage drop, IP00, UL/CSA recognized. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.229m","Width":"0.41m","Height":"0.385m","Phase Number":"3","Type Of Voltage":"AC","lifecycle_stage":"mature","Product Designation":"Netzdrossel f. FU","protection class IP":"IP00","current at AC maximum":"710A","Inductivity Rated Value":"0.000051H","power loss [W] of the coil":"540W","Operating Voltage Rated Value":"500V","Ambient Temperature Rated Value":"40°C","Operating Frequency Rated Value":"50Hz","power loss [W] of the iron core":"192W","thermal class acc. to IEC 60085":"H","operational current at AC rated value":"639A","Type Of Electrical Connection For Main Current Circuit":"flat connector","Relative Inductive Drop In Voltage For Rated Value Of The Current, Voltage And Frequency":"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=385551&mlfb=4EU3951-7UA00-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU3951-7UA00-0A/alternatives.json"},"ai":{"faq":[{"question":"What is 4EU3951-7UA00-0A's listed depth?","answer":"The depth is 0.229 m."},{"question":"What is 4EU3951-7UA00-0A's listed width?","answer":"The width is 0.41 m."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU3951-7UA00-0A","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/4EU3951-7UA00-0A 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}}