{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3911-0BS00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3911-0BS00","canonicalUrl":"https://aoctrl.com/siemens/4EP3911-0BS00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3911-0BS00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EP3911-0BS00 filter reactor, 3-phase, 10 kvar, 400 V, 50 Hz, 7% detuning, 189 Hz resonant frequency, IP00, screw terminals.","salesMarkdown":"The Siemens 4EP3911-0BS00 is a three-phase filter reactor rated at 10 kvar at 400 V, 50 Hz, with 7% detuning. The resonant frequency is 189 Hz, built to EN 61558-2-20. The 10 kvar rating matches a capacitor bank of the same size — this reactor goes in series with the capacitor to form a detuned filter bank. The 7% detuning (p=7) is the standard choice for industrial networks with six-pulse drives; it blocks the 5th harmonic from resonating with the cap bank. The 189 Hz resonant frequency confirms that. IP00 means it's open-frame, intended for inside a clean, dry enclosure — not out on the plant floor where dust and moisture get in. ## Termination and integration Terminals are screw connection — standard for panel wiring. No DIN-rail clip; this is a bolt-down reactor, so plan for chassis mounting inside the enclosure with proper clearance around the magnetic core for cooling.","metaTitle":"Siemens 4EP3911-0BS00 Filter Reactor, 10 kvar, 400 V, 50 Hz","metaDescription":"Siemens 4EP3911-0BS00 filter reactor, 3-phase, 10 kvar, 400 V, 50 Hz, 7% detuning, 189 Hz tuning. Mature lifecycle; sourced to order. RFQ for availability and pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"lifecycle_stage":"mature"}},"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=101194&mlfb=4EP3911-0BS00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3911-0BS00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EP3911-0BS00?","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 your quantity and delivery window."},{"question":"What is the 4EP3911-0BS00 used for?","answer":"It is a three-phase filter reactor used in detuned harmonic filter banks, rated 10 kvar at 400 V, 50 Hz, with 7% detuning (189 Hz resonant frequency). It goes in series with a power-factor-correction capacitor to block 5th harmonic currents from six-pulse drives."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3911-0BS00","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/4EP3911-0BS00 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}}