{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839166","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839166","canonicalUrl":"https://aoctrl.com/schneider/LV839166","factsUrl":"https://aoctrl.com/api/mcp/products/LV839166","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ2, LV839166, UL 489 circuit breaker, 2000 A rated, 3-pole, drawout mount, LF breaking capacity, 600 VAC, with ArcBlok.","salesMarkdown":"The Schneider LV839166 is a MasterPact MTZ2 drawout circuit breaker rated 2000 A at 104 °F (40 °C), 3-pole, with LF breaking capacity. This part is obsolete per the manufacturer. The 2000 A line-rated current at 40 °C sets the continuous ampacity for the drawout cassette and cradle — no derating needed at typical 40 °C ambient. The 150 kA Icu at 480 V AC UL 489 and 100 kA Icu at 600 V AC UL 489 define the interrupting capacity at those common distribution voltages; the LF breaking capacity code signals a high-interrupting variant for high-fault installations. Integral instant protection trips between 49.5 and 55.5 kA — that's the magnetic-only instantaneous pickup for short-circuit protection, not the long-time or short-time settings. The 22 kA Icw at 0.5 s UL 489 short-time withstand current tells you the breaker can hold closed under fault for 0.5 s to allow downstream coordination, then clear. Drawout mounting means the breaker slides into a cradle with disconnect position for safe maintenance without unbolting line and load connections. The 4.5 in (115 mm) connection pitch and base plate rails support define the footprint for switchboard integration.","metaTitle":"Schneider LV839166 MasterPact MTZ2 2000A 3P Drawout, Obsolet","metaDescription":"Schneider LV839166 MasterPact MTZ2 circuit breaker, 2000A, 3P, drawout, 200 kA Icu at 240V. Obsolete. Sourced 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)","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 20 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":"2000 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":"2000 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/b871cf00ab78fda295ae3512c905d75b.pdf","sourceUrl":"https://www.se.com/ie/en/product/LV839166/circuit-breaker-masterpact-mtz2-ul-489-max-2000a-rated-3-pole-drawout-mount-lf-breaking-cap-600vac-w-arcblok/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV839166/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LV839166?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings for LV839166?","answer":"2000 A rated current at 40 °C, 3-pole, drawout mount, with 200 kA Icu at 240 V AC, 150 kA Icu at 480 V AC, and 100 kA Icu at 600 V AC per UL 489. Integral instant protection trips at 49.5 to 55.5 kA. Short-time withstand current is 22 kA for 0.5 s."},{"question":"What is the depth of LV839166?","answer":"The depth is 16.8 in (426.8 mm)."},{"question":"What is the width of LV839166?","answer":"The width is 17.5 in (444.3 mm)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839166","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/LV839166 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}}