{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV838921","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV838921","canonicalUrl":"https://aoctrl.com/schneider/LV838921","factsUrl":"https://aoctrl.com/api/mcp/products/LV838921","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ2, LV838921, 3-pole drawout circuit breaker, 1600 A rated, LF breaking capacity, 600 VAC UL 489.","salesMarkdown":"The LV838921 is a Schneider Electric MasterPact MTZ2 drawout circuit breaker, 3-pole, rated 1600 A at 104 °F (40 °C) with LF breaking capacity — meaning 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. That's a serious main or feeder breaker for a 600 V class switchboard, sized to handle a 1600 A bus without cascading upstream. The drawout chassis lets you rack the breaker in and out for maintenance or swap without disturbing the bus connections — standard for large-frame power breakers in industrial and commercial distribution. The integral instant protection trips between 49.5 and 55.5 kA — that's the magnetic-only short-circuit pickup range, set at the factory for this LF code. Maximum breaking time is 9 ms; closing response is 70 ms. Physical footprint: 17.5 in wide, 17.3 in tall, 16.8 in deep — that's the drawout cassette envelope. Mounting is on base plate rails with a 4.5 in (115 mm) connection pitch. Network frequency is 50/60 Hz.","metaTitle":"Schneider LV838921 MasterPact MTZ2 1600A, 200kA Icu, Obsolet","metaDescription":"LV838921 MasterPact MTZ2 1600A circuit breaker, 3P drawout, 200 kA Icu at 240 VAC. Obsolete — sourced to order against RFQ via independent channels.","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 16 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":"1600 A 104 °F (40 °C)","Maximum breaking time":"9 ms","Nbr. of units in pkg.":"1","Breaking capacity code":"LF","Circuit breaker CT rating":"1600 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/3063db90124378d571166155c25b8739.pdf","sourceUrl":"https://www.se.com/ie/en/product/LV838921/circuit-breaker-masterpact-mtz2-ul-489-max-1600a-rated-3-pole-drawout-mount-lf-breaking-cap-600vac/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV838921/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LV838921?","answer":"The LV838921 is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What is LV838921's listed depth?","answer":"The listed depth is 16.8 in (426.8 mm)."},{"question":"What is LV838921's listed width?","answer":"The listed width is 17.5 in (444.3 mm)."},{"question":"What compliance documentation does the brand provide for LV838921?","answer":"The LV838921 is UL 489 listed per its breaking capacity ratings. The evidence does not specify RoHS, REACH, or other documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV838921","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/LV838921 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}}