{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV838923","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV838923","canonicalUrl":"https://aoctrl.com/schneider/LV838923","factsUrl":"https://aoctrl.com/api/mcp/products/LV838923","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ2, LV838923, 3-pole drawout circuit breaker, 2000 A rated, LF breaking capacity, 600 VAC, UL 489.","salesMarkdown":"The Schneider Electric LV838923 is a MasterPact MTZ2 drawout circuit breaker, 3-pole, rated 2000 A at 40 °C, with an LF breaking capacity code. The integral instantaneous protection trips between 49.5 and 55.5 kA — that's the magnetic-only pickup range for bolted faults. Below that, the 22 kA short-time withstand (Icw) for 0.5 s per UL 489 lets the breaker ride through downstream faults long enough for a feeder breaker to clear, preserving selectivity. Drawout mounting means the breaker chassis stays bolted to the base plate rails, and the removable cradle slides in and out for safe maintenance or swap without disturbing the bus connections. The 4.5 in (115 mm) connection pitch matches standard panel bus spacing for this frame size. ## Sourcing reality — lifecycle and procurement posture This part is officially obsolete per the manufacturer. If your design is still in the specification phase, this is the moment to evaluate a current-production MasterPact MTZ frame with a similar rating to avoid a future last-time-buy scramble. The breaker occupies a 17.5 in wide by 17.3 in tall by 16.8 in deep footprint. That depth includes the drawout mechanism and arc chute — verify your enclosure depth allows the full 426.8 mm for the cradle plus clearance for the rear bus connections and any auxiliary wiring trough. The base plate rails are the intended mounting support; no additional sub-panels needed for this frame.","metaTitle":"Schneider Electric LV838923 MasterPact MTZ2, 2000 A, 3P, Obs","metaDescription":"LV838923 MasterPact MTZ2 circuit breaker, 2000 A, 3-pole, drawout, 200 kA Icu at 240 V. Obsolete — sourced to order against RFQ via independent distribution.","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)","Maximum breaking time":"9 ms","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/c95f46de1d7208f86736533e98096b37.pdf","sourceUrl":"https://www.se.com/us/en/product/LV838923/circuit-breaker-masterpact-mtz2-ul-489-max-2000a-rated-3-pole-drawout-mount-lf-breaking-cap-600vac/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV838923/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for LV838923?","answer":"Submit an RFQ against this listing. We source through independent distribution channels and confirm availability and current pricing at quote time — no stock figures or lead-time numbers are published here."},{"question":"What is LV838923's listed depth?","answer":"The depth is 16.8 in (426.8 mm)."},{"question":"What is LV838923's listed width?","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/LV838923","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/LV838923 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}}