{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LE3400U33X","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LE3400U33X","canonicalUrl":"https://aoctrl.com/schneider/LE3400U33X","factsUrl":"https://aoctrl.com/api/mcp/products/LE3400U33X","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric PowerPact L, MicroLogic 3.3 S trip unit, LSI protection, 125...400 A.","salesMarkdown":"The LE3400U33X is a MicroLogic 3.3 S trip unit for the PowerPact L molded-case circuit breaker family. It provides LSI protection — long-time, short-time, and instantaneous — covering a continuous current adjustment range of 125 to 400 A. That means you dial in the exact frame rating for the load, not a fixed value. The 125...400 A rating is the trip unit's adjustable continuous-current range, not a fixed setpoint. The LSI protection covers long-time (cable/overload), short-time (low-level fault with intentional delay for selectivity), and instantaneous (high-fault, no delay) curves. This trip unit is for coordination in a distribution panel where you need to stage tripping downstream of a main breaker.","metaTitle":"Schneider Electric LE3400U33X PowerPact L MicroLogic 3.3 S T","metaDescription":"Schneider Electric LE3400U33X PowerPact L trip unit with MicroLogic 3.3 S, LSI protection, rated 125...400 A. Active lifecycle, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Air Circuit Breakers"],"specifications":{"title":"LE3400U33X","Category":"US10DE201103","description":"Trip unit, PowerPacT L, Micrologic standard, LSI, 3.3S, 125A to 400A","Product name":"PowerPact L","Trip unit name":"MicroLogic 3.3 S","lifecycle_stage":"current","Trip unit rating":"125...400 A","Nbr. of units in pkg.":"1","Product or Component Type":"Trip unit","Trip unit protection functions":"LSI"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6856aae9bb7dd0523035d01a01ccd40e.pdf","sourceUrl":"https://www.se.com/us/en/product/LE3400U33X/trip-unit-powerpact-l-micrologic-standard-lsi-3-3s-125a-to-400a/"},"ai":{"faq":[{"question":"What protection functions does the MicroLogic 3.3 S provide?","answer":"LSI: long-time (overload), short-time (selective coordination), and instantaneous (high-fault) protection."},{"question":"What is the adjustable current range of this trip unit?","answer":"125 to 400 A continuous, adjustable via the trip unit dials."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LE3400U33X","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/LE3400U33X when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}