{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3910-7AS10","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3910-7AS10","canonicalUrl":"https://aoctrl.com/siemens/4EP3910-7AS10","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3910-7AS10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens Netzdrossel mains choke, 4EP3910-7AS10, 3-phase AC, 50A max / 45A rated, 500V, 0.57mH, IP00, free cable ends.","salesMarkdown":"## What this mains choke does The Siemens 4EP3910-7AS10 is a Netzdrossel — a three-phase AC mains choke (line reactor) rated 50 A maximum, 45 A nominal, at 500 V operating voltage. It's the component that sits between the supply and a drive or converter to limit harmonic currents, smooth line notching, and protect the DC bus from transient spikes. The 0.57 mH inductance per phase, combined with a 3 % relative inductive voltage drop at rated current, tells you it's sized for moderate harmonic mitigation — enough to keep a 6-pulse drive within typical IEEE 519 limits for a weak grid, but not a heavy-duty DC-link choke. IP00 open-frame construction — no enclosure, no touch protection. This choke mounts inside a panel or cabinet, not on a DIN rail. Dimensions: 0.219 m wide, 0.179 m tall, 0.123 m deep. Connection is via free cable ends, so you'll terminate directly to a terminal block or busbar. Thermal class B insulation per IEC 60085 means the winding can handle a 130 °C hot-spot temperature; the total power loss breaks down to 43.8 W in the coil plus 24.2 W in the iron core, so plan for that heat inside the enclosure — forced ventilation or derating above 40 °C ambient. The 50 A maximum / 45 A rated current at 500 V AC, 50/60 Hz, defines the continuous load this choke can carry. If your drive's DC bus is already marginal on voltage, that drop matters — factor it into the input voltage budget. The 0.57 mH inductance per phase is the value you'd use for harmonic modelling or to check resonance with downstream capacitors. Free cable ends (no lugs) mean you supply the termination hardware; the conductor cross-section isn't listed, but at 50 A you're looking at 10–16 mm² cable depending on local code and ambient.","metaTitle":"Siemens 4EP3910-7AS10 Mains Choke, 50A, 500V, 3-Phase","metaDescription":"Siemens 4EP3910-7AS10 Netzdrossel mains choke, 50A max, 500V AC, 3-phase, 0.57mH, IP00. Available to order against RFQ. Request current pricing and lead time.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.123m","Width":"0.219m","Height":"0.179m","Maximum":"50A","Rated Value":"45A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel","Protection class IP":"IP00","Inductivity rated value":"0.00057H","Power loss [W] of the coil":"43.8W","Operating voltage rated value":"500, 500V","Ambient temperature rated value":"40°C","Operating frequency rated value":"60 ... 50Hz","Power loss [W] of the iron core":"24.2W","Thermal class acc. to IEC 60085":"B","Type of electrical connection for main current circuit":"free cable endings","Relative inductive drop in voltage on the measurement level current, voltage and frequency":"3%"}},"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=536366&mlfb=4EP3910-7AS10","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3910-7AS10/alternatives.json"},"ai":{"faq":[{"question":"What are the key specifications of 4EP3910-7AS10?","answer":"It is a 3-phase AC mains choke rated 50 A maximum, 45 A nominal, at 500 V operating voltage, with 0.57 mH inductance per phase and a 3 % voltage drop at rated current. Dimensions are 0.219 m wide × 0.179 m tall × 0.123 m deep, IP00 enclosure, free cable ends."},{"question":"Where can I buy 4EP3910-7AS10 and get current pricing?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Submit a request for current pricing and availability — confirmed at quote time."},{"question":"Will 4EP3910-7AS10 drop into a panel specified for 5SJ3140-7?","answer":"No — 5SJ3140-7 is a single-pole miniature circuit breaker (MCB), not a mains choke. The 4EP3910-7AS10 is a completely different component class; it will not fit the same panel footprint or wiring scheme without redesign."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3910-7AS10","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/4EP3910-7AS10 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}}