{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839304","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839304","canonicalUrl":"https://aoctrl.com/schneider/LV839304","factsUrl":"https://aoctrl.com/api/mcp/products/LV839304","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ3, LV839304, UL 489 circuit breaker, 5000 A rated, 3-pole, drawout mount, L breaking capacity, 600 VAC, without Micrologic trip unit, with ArcBlok.","salesMarkdown":"The LV839304 is a MasterPact MTZ3 drawout circuit breaker rated for 5000 A continuous at 40 °C, 3-pole, with L breaking capacity code. The integral instant protection is set at 153...187 kA, which is the magnetic trip threshold for bolted faults; that range tells you the breaker clears fast on hard shorts without waiting for the trip unit. Maximum breaking time is 9 ms, and the closing response is 70 ms — both matter for arc-flash energy coordination studies. ## Duty cycle and mechanical endurance Electrical durability is rated at 1000 cycles under ANSI C37.50, mechanical durability at 5000 cycles. For a 5000 A frame, 1000 electrical operations is typical for the main breaker role — you are not cycling this daily like a motor-starter contactor. The 5000 mechanical cycles cover racking and test positions over the breaker's service life.","metaTitle":"Schneider LV839304 MasterPact MTZ3 5000A 3P Drawout Circuit","metaDescription":"Schneider Electric LV839304 MasterPact MTZ3 circuit breaker, 5000A rated, 3-pole drawout, UL 489, 200 kA Icu at 240 VAC. Active production. Available to order, quoted on request.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Air Circuit Breakers"],"specifications":{"Depth":"16.8 in (426.8 mm)","Width":"31.07 in (789.1 mm)","title":"LV839304","Height":"18.8 in (478.1 mm)","description":"Circuit breaker, MasterPacT MTZ3, UL 489, max 5000A rated, 3 pole, drawout mount, L breaking cap, 600VAC, w/o Micrologic trip unit, w/ ArcBlok","Control Type":"Push-button","Network type":"AC","Product name":"MasterPact MTZ3","Mounting Mode":"Drawout","lifecycle_stage":"current","Connection pitch":"9.06 in (230 mm)","Mounting Support":"Base plate Rails","Device short name":"MTZ3 50 L","Network Frequency":"50/60 Hz","Performance Level":"200 kA Icu 240 V AC 50/60 Hz UL 489 150 kA Icu 480 V AC 50/60 Hz UL 489 100 kA Icu 600 V AC 50/60 Hz UL 489","Poles description":"3P","Device Application":"Protection","Line Rated Current":"5000 A 104 °F (40 °C)","Electrical durability":"1000 cycles ANSI C37.50","Maximum breaking time":"9 ms","Mechanical durability":"5000 cycles ANSI C37.50","Nbr. of units in pkg.":"1","Breaking capacity code":"L","Circuit breaker CT rating":"5000 A","Product or Component Type":"Circuit breaker","Integral instant protection":"153...187 kA","Maximum closing response time":"70 ms","Rated breaking and making capacity":"90 kA","[Icw] rated short-time withstand current":"100 kA 0.5 s UL 489"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/890af31a5c9f8893712cdba94a22bf58.pdf","sourceUrl":"https://www.se.com/ca/en/product/LV839304/circuit-breaker-masterpact-mtz3-ul-489-max-5000a-rated-3-pole-drawout-mount-l-breaking-cap-600vac-w-o-micrologic-trip-unit-w-arcblok/"},"ai":{"faq":[{"question":"What does the L breaking capacity code mean?","answer":"The L breaking capacity code indicates the standard interrupting rating level on the MasterPact MTZ3 frame, corresponding to the UL 489 values listed: 200 kA at 240 VAC, 150 kA at 480 VAC, 100 kA at 600 VAC."},{"question":"Does LV839304 include a trip unit?","answer":"No, the LV839304 ships without a Micrologic trip unit. The trip unit must be ordered separately to match the required protection functions (LSIG, P, H, etc.)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839304","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/LV839304 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}