{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV431491","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV431491","canonicalUrl":"https://aoctrl.com/schneider/LV431491","factsUrl":"https://aoctrl.com/api/mcp/products/LV431491","rawCanonicalId":null},"summary":{"shortDescription":"Schneider LV431491 Compact Nsx — now discontinued, supplied from remaining surplus and broker stock.","salesMarkdown":"## Overview The LV431491 is a MicroLogic 5.2 E electronic trip unit for the Schneider ComPact NSX250 molded-case breaker, rated 250 A with 3 poles and LSI protection (long-time, short-time, instantaneous). The long-time pickup Ir adjusts from 100 to 250 A in 1 A steps, letting you match the trip unit to the actual load without changing the breaker frame. Short-time delay Tsd is adjustable 0 to 0.4 s with I²t on or off, giving selectivity headroom downstream.","metaTitle":"Schneider LV431491 MicroLogic 5.2 E trip unit, 250 A, 3-pole","metaDescription":"Schneider LV431491 MicroLogic 5.2 E electronic trip unit for ComPact NSX250, 250 A, 3-pole, LSI protection, adjustable Ir 100–250 A, LCD display.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":[],"specifications":{"Range":"ComPact","Category":"US10DE201101","Standards":"EN/IEC 60947-2 UL 508","Display Type":"LCD display","Network type":"AC","Thermal memory":"20 minutes before and after tripping","Trip unit name":"MicroLogic 5.2 E","Number of poles":"3P","Protection type":"L : for overload protection (long time) S : for short time short-circuit protection I : for instantaneous short-circuit protection","lifecycle_stage":"mature","Local signalling":"Flashing LED (green) for ready to operate LED 105 % Ir (red) for overload LED 90 % Ir (orange) for overload","Range of Product":"ComPact NSX100...250","Network Frequency":"50/60 Hz","Device Application":"Distribution","Type of Measurement":"Energy meter","Trip unit technology":"Electronic","Communication of data":"Instantaneous and demand values Maintenance indicators Power quality Energy metering Maximeters/minimeters Demand current and power Protection and alarm settings Time-stamped histories and event tables","Nbr. of units in pkg.":"1","Trip unit rated current":"250 A 104 °F (40 °C)","Earth-leakage protection":"Without","Electrical data recording":"Maintenance indicators","Product or Component Type":"Trip unit","Protected poles description":"3t","Trip unit protection functions":"LSI","[Ue] rated operational voltage":"690 V AC 50/60 Hz","Zone selective interlocking ZSI":"With","Ambient Air Temperature for Storage":"-40...185 °F (-40...85 °C)","Ambient Air Temperature for Operation":"-13...158 °F (-25...70 °C)","Long-time protection delay adjustment type tr":"Adjustable","Short-time protection delay adjustment type tsd":"Adjustable","[Tr] Long-Time Protection Delay Adjustment Range":"15...400 s 1.5 x Ir 0.35...11 s 7.2 x Ir 0.5...16 s 6 x Ir","Short-time protection pick-up adjustment type Isd":"Adjustable 9 settings","[Ir] long-time protection pick-up adjustment range":"100...250 A","[tsd] Short-time protection delay adjustment range":"0...0.4 s I²t=off 0.1...0.4 s I²t=on","Instantaneous protection pick-up adjustment type Ii":"Adjustable","[Isd] Short-time protection pick-up adjustment range":"1.5...10 x Ir","[Ii] instantaneous protection pick-up adjustment range":"1.5...12 x In","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable 9 settings"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$612.39","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2aff7018a1d1b1f59f880881fade8712.pdf","sourceUrl":"https://www.se.com/uk/en/product/LV431491/trip-unit-micrologic-5-2-e-for-compact-nsx-250-circuit-breakers-electronic-rating-250a-3-poles-3d/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV431491/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV431491","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/LV431491 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}