{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV433938","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV433938","canonicalUrl":"https://aoctrl.com/schneider/LV433938","factsUrl":"https://aoctrl.com/api/mcp/products/LV433938","rawCanonicalId":null},"summary":{"shortDescription":"circuit breaker Compact NSX400N, 50kA at 415 VAC, Micrologic4.3 Vigi trip unit 400 A, 3 poles 3d","salesMarkdown":null,"metaTitle":null,"metaDescription":null,"metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Range":"ComPact","Depth (D)":"110 mm","Standards":"EN/IEC 60947","Width (W)":"140 mm","Height (H)":"255 mm","Control type":"Toggle","Network type":"AC","Product name":"ComPact NSX","Thermal memory":"20 minutes before and after tripping","Trip unit name":"MicroLogic 4.3","Number of poles":"3P","Protection type":"L : for overload protection (long time) So : for short time short-circuit protection with fixed delay I : for instantaneous short-circuit protection R : for earth-leakage protection","lifecycle_stage":"mature","Connection pitch":"45 mm","Local signalling":"Flashing LED (green) for ready to operate LED 105 % Ir (red) for overload LED 90 % Ir (orange) for overload","Mounting support":"Backplate","Pollution degree":"3 conforming to IEC 60664-1","Range of product":"ComPact NSX400...630","Trip unit rating":"400 A at 40 °C","Device short name":"VigiCompact NSX400N","Network frequency":"50/60 Hz","Performance level":"N 50 kA 415 V AC","Relative humidity":"0...95 %","Upside connection":"Front","Device application":"Distribution","Operating altitude":"0...2000 m without derating 2000 m...5000 m with derating","[In] rated current":"400 A at 40 °C","Downside connection":"Front","Overvoltage category":"Class II","Trip unit technology":"Electronic","Utilisation category":"Category A","Electrical durability":"6000 cycles at 440 V In 12000 cycles at 440 V In/2","Mechanical durability":"15000 cycles","IK degree of protection":"IK07 conforming to IEC 62262","IP degree of protection":"IP40 conforming to IEC 60529","Earth-leakage protection":"Integrated","Product or component type":"Earth leakage circuit breaker","Suitability for isolation":"Yes conforming to EN/IEC 60947-2","Protected poles description":"3t","Circuit breaker mounting mode":"Fixed","[Ui] rated insulation voltage":"500 V AC 50/60 Hz","Earth-leakage protection class":"Class A","Trip unit protection functions":"LSoIR","[Ue] rated operational voltage":"440 V AC 50/60 Hz","Zone selective interlocking ZSI":"Without","Electrical shock protection class":"Class II","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-25...70 °C","Earth-leakage protection specific mode":"OFF using the IΔn rotary switch","[Uimp] rated impulse withstand voltage":"8 kV","Number of slots for electrical auxiliaries":"6 slot(s)","Long-time protection delay adjustment type tr":"Fixed","Short-time protection delay adjustment type tsd":"Fixed","[Tr] Long-Time Protection Delay Adjustment Range":"11 s at 7.2 x Ir 16 s at 6 x Ir 400 s at 1.5 x Ir","Short-time protection pick-up adjustment type Isd":"Adjustable","[Ir] long-time protection pick-up adjustment range":"160...400 A","[tsd] Short-time protection delay adjustment range":"0.02 s","Instantaneous protection pick-up adjustment type Ii":"Fixed","[Ics] rated service short-circuit breaking capacity":"85 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 42 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2","[Icu] rated ultimate short-circuit breaking capacity":"85 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 42 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2","[Isd] Short-time protection pick-up adjustment range":"1.5...10 x Ir","[Ii] instantaneous protection pick-up adjustment range":"4800 A","Earth-leakage protection sensitity adjustment type IΔn":"Adjustable","Earth-leakage protection time delay adjustement type Δt":"Adjustable","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable 9 settings","[Δt] Earth-leakage protection time delay adjustment range":"0 ms 60 ms 150 ms 500 ms 1 s","[IΔn] earth-leakage protection sensitivity adjustment range":"300 mA 500 mA 1 A 3 A 5 A 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/81db1c1350332bc0c13492659f6663c1.pdf","sourceUrl":"https://www.se.com/hk/en/product/LV433938/circuit-breaker-compact-nsx400n-50ka-at-415-vac-micrologic4-3-vigi-trip-unit-400-a-3-poles-3d/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV433938/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV433938","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/LV433938 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}}