{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839164","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839164","canonicalUrl":"https://aoctrl.com/schneider/LV839164","factsUrl":"https://aoctrl.com/api/mcp/products/LV839164","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ2, LV839164, 1200 A, 3-pole, drawout, LF breaking capacity, 600 VAC, UL 489, with ArcBlok.","salesMarkdown":"The LV839164 is a MasterPact MTZ2 drawout circuit breaker rated 1200 A continuous at 40 °C, 3-pole, with LF breaking capacity code. It carries UL 489 listings: 200 kA Icu at 240 V AC, 150 kA Icu at 480 V AC, and 100 kA Icu at 600 V AC — these are the fault-current levels it can safely interrupt without self-destruction, so the SCCR of the downstream panel must be coordinated against these values. The ArcBlok technology (integral instant protection set 49.5...55.5 kA) limits arc energy during a short-circuit event, reducing the pressure wave inside the enclosure. Schneider Electric has marked the LV839164 as obsolete. If you are holding a panel design that specifies the MTZ2 drawout footprint, verify whether a current-production MasterPact MTZ frame (MTZ1, MTZ2, MTZ3) with equivalent ratings can be substituted; the drawout cradle and bus connections differ across frame sizes. Drawout mounting on base-plate rails — the breaker slides into a fixed cradle with a 4.5 in (115 mm) connection pitch. The overall envelope is 17.5 in wide × 17.3 in tall × 16.8 in deep (444.3 × 438.8 × 426.8 mm). That depth includes the ArcBlok arc-chamber housing; verify the enclosure depth allows the full drawout racking travel before the breaker is committed to the panel layout. ## Performance and durability Mechanical durability is rated at 10,000 cycles per ANSI C37.50; electrical durability at 1,000 cycles under the same standard. Maximum breaking time is 9 ms, with a maximum closing response time of 70 ms. The short-time withstand current (Icw) is 22 kA for 0.5 s per UL 489 — this governs how long the breaker can carry fault current while waiting for a downstream device to clear, critical for selective coordination studies.","metaTitle":"Schneider Electric LV839164 MasterPact MTZ2 1200A 3P Drawout","metaDescription":"LV839164 MasterPact MTZ2 1200A 3-pole drawout circuit breaker, 200 kA Icu at 240 V UL 489. Obsolete; sourced to order against RFQ. ArcBlok technology.","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)","Height":"17.3 in (438.8 mm)","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 12 LF","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":"1200 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":"LF","Circuit breaker CT rating":"1200 A","Product or Component Type":"Circuit breaker","Integral instant protection":"49.5...55.5 kA","Maximum closing response time":"70 ms","Rated breaking and making capacity":"50 kA","[Icw] rated short-time withstand current":"22 kA 0.5 s UL 489"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2b2f8e674f5875d54c61e3b56bc0ad9f.pdf","sourceUrl":"https://www.se.com/ie/en/product/LV839164/circuit-breaker-masterpact-mtz2-ul-489-max-1200a-rated-3-pole-drawout-mount-lf-breaking-cap-600vac-w-arcblok/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV839164/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LV839164?","answer":"The LV839164 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock or price figures are published here."},{"question":"What are the key UL 489 breaking capacities for LV839164?","answer":"200 kA Icu at 240 V AC, 150 kA Icu at 480 V AC, and 100 kA Icu at 600 V AC — all per UL 489. These are the maximum fault currents the breaker can interrupt at those voltages."},{"question":"What is the rated continuous current of LV839164?","answer":"1200 A at 40 °C (104 °F) ambient. The breaker is also fitted with a 1200 A CT rating for its integral protection."},{"question":"What compliance documentation does Schneider provide for LV839164?","answer":"The part carries UL 489 listing for the US market. RoHS, REACH, and other compliance documents are typically available from Schneider Electric's product documentation portal for the MasterPact MTZ2 series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839164","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/LV839164 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}