{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839079","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839079","canonicalUrl":"https://aoctrl.com/schneider/LV839079","factsUrl":"https://aoctrl.com/api/mcp/products/LV839079","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ3, LV839079, 3-pole drawout circuit breaker, 5000 A rated, breaking capacity, 635 VAC, without Micrologic trip unit.","salesMarkdown":"The LV839079 is a Schneider Electric MasterPact MTZ3 3-pole drawout circuit breaker rated for 5000 A continuous at 104 °F (40 °C), with an breaking capacity code. It's built for ANSI C37.50 applications up to 635 VAC, and it ships without a Micrologic trip unit — you'll need to order that separately based on your protection coordination scheme. This breaker carries a 200 kA Icu at 254 VAC 60 Hz and 150 kA Icu at 508 VAC 60 Hz per ANSI C37.50. At 635 VAC 60 Hz it still holds 130 kA Icu. The integral instantaneous protection trips between 243 and 297 kA, so it clears hard faults before they cascade upstream. Rated short-time withstand current (Icw) is 100 kA for 0.5 s per ANSI C37.50, which means it can ride through a delayed trip coordination window — essential for selective coordination with downstream feeders. The maximum breaking time is 9 ms, and closing response time is 70 ms. Rated breaking and making capacity is 90 kA, and the CT rating matches the line current at 5000 A. Mechanical durability is 10,000 cycles, electrical durability 1,000 cycles per ANSI C37.50 — that's typical for a drawout power breaker; it's not a daily-operating contactor, it's a protective device for the main distribution. ## Physical footprint and mounting The drawout chassis measures 17.5 in wide by 17.3 in tall by 16.8 in deep (444.3 x 438.8 x 426.8 mm). Connection pitch is 9.06 in (230 mm). It mounts on a base plate with rails — standard for metal-enclosed switchgear lineups. The drawout design means you can rack the breaker out for maintenance or replacement without disturbing the bus connections.","metaTitle":"LV839079 MasterPact MTZ3 3P Drawout Circuit Breaker, 5000 A","metaDescription":"LV839079 MasterPact MTZ3 3-pole drawout circuit breaker, 5000 A rated, L1 breaking capacity, 635 VAC. Active production. Quoted to order against RFQ.","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":"17.5 in (444.3 mm)","title":"LV839079","Height":"17.3 in (438.8 mm)","description":"Circuit breaker, MasterPacT MTZ3, ANSI, max 5000A rated, 3 pole, drawout mount, L1 breaking cap, 635VAC, w/o Micrologic trip unit","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 L1","Network Frequency":"50/60 Hz","Performance Level":"200 kA Icu 254 V AC 60 Hz ANSI C37.50 200 kA Icu 508 V AC 60 Hz ANSI C37.50 130 kA Icu 635 V AC 60 Hz ANSI C37.50 200 kA Icu 254 V AC 50 Hz ANSI C37.50 150 kA Icu 508 V AC 50 Hz ANSI C37.50 100 kA Icu 635 V AC 50 Hz ANSI C37.50","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":"10000 cycles ANSI C37.50","Nbr. of units in pkg.":"1","Breaking capacity code":"L1","Circuit breaker CT rating":"5000 A","Product or Component Type":"Circuit breaker","Integral instant protection":"243...297 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 ANSI C37.50"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/da9c554e15bf1370865a26c11dedb1a0.pdf","sourceUrl":"https://www.se.com/us/en/product/LV839079/circuit-breaker-masterpact-mtz3-ansi-max-5000a-rated-3-pole-drawout-mount-l1-breaking-cap-635vac-w-o-micrologic-trip-unit/"},"ai":{"faq":[{"question":"What are the key ratings for LV839079?","answer":"Rated 5000 A continuous at 104 °F (40 °C), 3-pole, 635 VAC maximum. Breaking capacity is 200 kA Icu at 254 VAC and 130 kA Icu at 635 VAC per ANSI C37.50. Short-time withstand current is 100 kA for 0.5 s."},{"question":"Where can I buy LV839079 and how is it quoted?","answer":"The LV839079 is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at the time of quote — submit an RFQ for a firm commercial offer."},{"question":"What compliance documentation does Schneider Electric provide for LV839079?","answer":"As an ANSI-rated MasterPact MTZ3 breaker, it carries UL and CSA certifications per standard practice for this class. Specific RoHS and REACH declarations are available from Schneider Electric upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839079","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/LV839079 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}}