{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839144","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839144","canonicalUrl":"https://aoctrl.com/schneider/LV839144","factsUrl":"https://aoctrl.com/api/mcp/products/LV839144","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ2, LV839144, UL 489 circuit breaker, 3000 A rated, 3-pole, drawout mount, H breaking capacity, 600 VAC, without Micrologic trip unit, with ArcBlok.","salesMarkdown":"The LV839144 is a MasterPact MTZ2 drawout circuit breaker rated 3000 A continuous at 40 °C, 3-pole, with an H breaking capacity code. That H code means it delivers 100 kA Icu at 480 V AC and 85 kA Icu at 600 V AC under UL 489 — which is the interrupting rating that governs whether this breaker clears a fault without blowing up upstream gear. The 65 kA Icw short-time withstand rating for 0.5 s (UL 489) tells you it can ride through a delayed trip coordination scheme, so you can build selective coordination downstream without losing the main. The drawout mounting means the breaker chassis stays bolted to the base plate rails while the mechanism slides in and out — no need to disconnect power cables for maintenance or swap-out. That's the kind of feature that keeps a line-down event under an hour instead of a shift. The integral instantaneous protection trips between 135 and 165 kA peak, and the maximum breaking time sits at 25 to 30 ms. That speed limits arc energy and lets the ArcBlok technology do its job — containing the arc inside the pole and reducing pressure buildup in the enclosure. ## Where it sits in the panel The drawout cradle mounts on base plate rails, with a 4.5 in (115 mm) connection pitch that matches standard bus-bar takeoff spacing. Physical footprint is 17.5 in wide by 17.3 in tall by 16.8 in deep — that's a substantial piece of iron, so plan the enclosure depth and bus-bar routing accordingly. The breaker ships without a Micrologic trip unit, so you'll select and install the appropriate electronic trip relay separately.","metaTitle":"LV839144 MasterPact MTZ2 3000 A 3P Drawout Circuit Breaker","metaDescription":"LV839144 MasterPact MTZ2 UL 489 circuit breaker, 3000 A, 3-pole drawout, H breaking capacity 100 kA at 480 VAC. Active production. Quoted to order.","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":"LV839144","Height":"17.3 in (438.8 mm)","description":"Circuit breaker, MasterPacT MTZ2, UL 489, max 3000A rated, 3 pole, drawout mount, H breaking cap, 600VAC, w/o Micrologic trip unit, w/ ArcBlok","Control Type":"Push-button","Network type":"AC","Product name":"MasterPact MTZ2","Mounting Mode":"Drawout","lifecycle_stage":"current","Connection pitch":"4.5 in (115 mm)","Mounting Support":"Base plate Rails","Device short name":"MTZ2 30 H","Network Frequency":"50/60 Hz","Performance Level":"100 kA Icu 240 V AC 50/60 Hz UL 489 100 kA Icu 480 V AC 50/60 Hz UL 489 85 kA Icu 600 V AC 50/60 Hz UL 489","Poles description":"3P","Device Application":"Protection","Line Rated Current":"3000 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":"H","Circuit breaker CT rating":"3000 A","Product or Component Type":"Circuit breaker","Integral instant protection":"135...165 kA","Maximum closing response time":"70 ms","Rated breaking and making capacity":"90 kA","[Icw] rated short-time withstand current":"65 kA 0.5 s UL 489"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/749cfd507dd8b17837e65d69cc7af743.pdf","sourceUrl":"https://www.se.com/us/en/product/LV839144/circuit-breaker-masterpact-mtz2-ul-489-max-3000a-rated-3-pole-drawout-mount-h-breaking-cap-600vac-w-o-micrologic-trip-unit-w-arcblok/"},"ai":{"faq":[{"question":"How do I get current pricing and availability for LV839144?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time against your order quantity and delivery window."},{"question":"What is LV839144's listed depth?","answer":"The listed depth is 16.8 in (426.8 mm)."},{"question":"What is LV839144's listed width?","answer":"The listed width is 17.5 in (444.3 mm)."},{"question":"What compliance documentation does this brand provide for LV839144?","answer":"The LV839144 carries a UL 489 listing per the product description, which covers the safety standard for molded-case circuit breakers. RoHS and REACH compliance documentation is typically available from the manufacturer upon request, though not listed in this record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839144","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/LV839144 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}}