{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839028","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839028","canonicalUrl":"https://aoctrl.com/schneider/LV839028","factsUrl":"https://aoctrl.com/api/mcp/products/LV839028","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ3, LV839028, 4000A rated, 4-pole fixed mount, H3 breaking capacity, 635VAC, without Micrologic trip unit.","salesMarkdown":"The LV839028 is a MasterPact MTZ3 4000 A fixed-mount circuit breaker, 4-pole, with H3 breaking capacity. It's the frame and poles only — no Micrologic trip unit included, so you select and install the trip unit separately to match your protection curve. The H3 breaking capacity code means it delivers 100 kA Icu at 254 V AC and 508 V AC, and 85 kA Icu at 635 V AC per ANSI C37.50. Rated short-time withstand current (Icw) is 85 kA for 0.5 s per ANSI C37.50, which tells you how much fault current the breaker can carry without damage during a delayed trip — important for selective coordination schemes. Integral instant protection trips between 171 and 209 kA — that's the magnetic-only instantaneous pickup range built into the breaker frame, acting as a backup to the trip unit. Mechanical durability is 12,500 cycles, electrical durability 2,800 cycles per ANSI C37.50. For a 4000 A frame that's typical for main breaker duty — not a switching device for frequent load making/breaking. Fixed mount on a base plate with rails. Neutral position is left. Connection pitch is 9.06 in (230 mm). Overall dimensions: width 39.2 in (996.3 mm), height 13.9 in (352.2 mm), depth 11.7 in (297.7 mm). This is a large-frame breaker — plan your enclosure depth and bus bar routing accordingly. The 4000 A rating is at 104 °F (40 °C) ambient — derate if your switchroom runs hotter. The LV839028 is the fixed-mount, 4-pole, 4000 A frame with H3 breaking capacity, without trip unit. If you need a different breaking capacity (H1, H2) or a drawout version, those are separate order codes in the MTZ3 family.","metaTitle":"LV839028 MasterPact MTZ3 4000A 4P Fixed Circuit Breaker, H3","metaDescription":"LV839028 MasterPact MTZ3 4000A 4P fixed circuit breaker, H3 breaking capacity at 635VAC. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Air Circuit Breakers"],"specifications":{"Depth":"11.7 in (297.7 mm)","Width":"39.2 in (996.3 mm)","title":"LV839028","Height":"13.9 in (352.2 mm)","description":"Circuit breaker, MasterPacT MTZ3, ANSI, max 4000A rated, 4 pole, fixed mount, H3 breaking cap, 635VAC, w/o Micrologic trip unit","Control Type":"Push-button","Network type":"AC","Product name":"MasterPact MTZ3","Mounting Mode":"Fixed","lifecycle_stage":"current","Connection pitch":"9.06 in (230 mm)","Mounting Support":"Base plate Rails","Neutral position":"Left","Device short name":"MTZ3 40 H3","Network Frequency":"50/60 Hz","Performance Level":"100 kA Icu 254 V AC 50/60 Hz ANSI C37.50 100 kA Icu 508 V AC 50/60 Hz ANSI C37.50 85 kA Icu 635 V AC 50/60 Hz ANSI C37.50","Poles description":"4P","Device Application":"Protection","Line Rated Current":"4000 A 104 °F (40 °C)","Electrical durability":"2800 cycles ANSI C37.50","Maximum breaking time":"25...30 ms","Mechanical durability":"12500 cycles ANSI C37.50","Nbr. of units in pkg.":"1","Breaking capacity code":"H3","Circuit breaker CT rating":"4000 A","Product or Component Type":"Circuit breaker","Integral instant protection":"171...209 kA","Maximum closing response time":"70 ms","Rated breaking and making capacity":"170 kA","[Icw] rated short-time withstand current":"85 kA 0.5 s ANSI C37.50"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8c8e30ceca0eb363a299d6d8f939ba5f.pdf","sourceUrl":"https://www.se.com/ca/en/product/LV839028/circuit-breaker-masterpact-mtz3-ansi-max-4000a-rated-4-pole-fixed-mount-h3-breaking-cap-635vac-w-o-micrologic-trip-unit/"},"ai":{"faq":[{"question":"Where can I buy LV839028 and how do I get a price?","answer":"The LV839028 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is LV839028's listed depth?","answer":"The LV839028 has a depth of 11.7 in (297.7 mm)."},{"question":"What is LV839028's listed width?","answer":"The LV839028 has a width of 39.2 in (996.3 mm)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839028","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/LV839028 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}}