{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV838919","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV838919","canonicalUrl":"https://aoctrl.com/schneider/LV838919","factsUrl":"https://aoctrl.com/api/mcp/products/LV838919","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ2, LV838919, 3-pole drawout circuit breaker, 1200 A rated, LF breaking capacity, 600 VAC, UL 489.","salesMarkdown":"The Schneider Electric LV838919 is a MasterPact MTZ2 drawout circuit breaker, 3-pole, rated 1200 A at 40 °C, with LF breaking capacity. It's a UL 489 listed device for 600 VAC service, designed for main or feeder protection in switchgear where drawout extraction simplifies maintenance and downstream isolation. Its interrupting ratings are substantial: 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. If you're managing a lifecycle transition, the MasterPact MTZ2 series has been succeeded by the MasterPact MTZ3 family. The exact replacement order code depends on the required breaking capacity and accessory configuration; a cross-reference from the original switchgear one-line or panel schedule is the cleanest way to confirm fit. The drawout cradle (mounting mode) means the breaker slides out for inspection or replacement without disturbing the bus connections, which is standard for main breakers in double-ended or tie-configuration gear. The LF breaking capacity code indicates the higher interrupting tier within the MTZ2 family. With a 50 kA rated breaking and making capacity and a 22 kA short-time withstand (Icw) for 0.5 s per UL 489, this breaker can handle delayed-tripping coordination schemes where downstream devices clear faster while the main holds in for a set duration. Integral instantaneous protection is set at 49.5 to 55.5 kA — that's the magnetic trip threshold for bolted faults. The maximum breaking time is 9 ms, and closing response is 70 ms, which are typical for this class of power breaker. Mounting is drawout on base plate rails, with a connection pitch of 115 mm (4.5 in) between phases. Overall dimensions: 17.5 in wide, 17.3 in high, 16.8 in deep. That's a substantial footprint — verify the switchgear cell opening and racking mechanism compatibility before specifying, especially if retrofitting into an existing lineup.","metaTitle":"Schneider LV838919 MasterPact MTZ2 Circuit Breaker, 1200 A,","metaDescription":"Schneider Electric LV838919 MasterPact MTZ2 circuit breaker, 1200 A rated, 3-pole drawout, 200 kA Icu at 240 V UL 489. 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 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)","Maximum breaking time":"9 ms","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/717308daa00677f4108fc54635409ff6.pdf","sourceUrl":"https://www.se.com/ie/en/product/LV838919/circuit-breaker-masterpact-mtz2-ul-489-max-1200a-rated-3-pole-drawout-mount-lf-breaking-cap-600vac/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LV838919/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy LV838919 and get a price?","answer":"We source this part to order through independent distribution. Submit an RFQ — availability and current pricing are confirmed at quote time. No stock or price figures are published here because the supply position changes."},{"question":"What is the closest alternative to LV838919 in the MasterPact family?","answer":"The direct successor series is MasterPact MTZ3. The exact replacement order code depends on the required breaking capacity (LF tier) and accessory set. A cross-reference from the original switchgear documentation is the most reliable way to identify the correct MTZ3 variant."},{"question":"What are the interrupting ratings for LV838919?","answer":"Per UL 489: 200 kA Icu at 240 V AC, 150 kA Icu at 480 V AC, and 100 kA Icu at 600 V AC. The rated short-time withstand current (Icw) is 22 kA for 0.5 s."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV838919","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/LV838919 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}}