{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839120","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839120","canonicalUrl":"https://aoctrl.com/schneider/LV839120","factsUrl":"https://aoctrl.com/api/mcp/products/LV839120","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Masterpact MTZ1 08 HB, LV839120, automatic switch disconnector, 800 A rated operational current at 40 °C, 3-pole, fixed mounting, 200 kA Icu at 240 V AC UL 489.","salesMarkdown":"The LV839120 is a Masterpact MTZ1 08 HB automatic switch disconnector rated 800 A continuous at 40 °C ambient — that's the current it carries without derating in a typical 104 °F panel environment. The 200 kA Icu at 240 V AC (100 kA at 480 V) under UL 489 means it can safely interrupt a fault up to that level without blowing apart; the integral instant protection is set at 22 kA, so the breaker itself clears short-circuits below that threshold without waiting for upstream coordination. Fixed-mount, 3-pole construction with a 70 mm connection pitch — that's the standard Masterpact MTZ1 footprint for switchboard builders. Push-button control on the front for local open/close; network type is AC, so it's designed for 50/60 Hz distribution feeders. This is a distribution-class switch disconnector — think main feeder breaker in a switchboard, or a large branch disconnect for a 480 V motor control center. The 200 kA SCCR at 240 V gives headroom for high-fault utility services; at 480 V the 100 kA Icu still covers most industrial services. The fixed-mount variant goes into a panel with bolted bus connections, not a drawout cradle.","metaTitle":"Schneider LV839120 MTZ1 08 HB 800A 3P Fixed Switch Disconnec","metaDescription":"Schneider Electric LV839120 Masterpact MTZ1 08 HB switch disconnector, 800 A rated at 40 °C, 200 kA breaking at 240 V AC UL 489, 3-pole fixed mount. Active production, available to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Air Circuit Breakers"],"specifications":{"Depth":"8.2 in (209 mm)","Width":"10.9 in (276.2 mm)","title":"LV839120","Height":"11.8 in (300.5 mm)","description":"Automatic, switch disconnector, Masterpact MTZ1, 08 HB, 800A, UL, 3P, fixed","Control Type":"Push-button","Network type":"AC","Mounting Mode":"Fixed","lifecycle_stage":"current","Connection pitch":"2.8 in (70 mm)","Breaking capacity":"200.0 kA Icu 240 V AC 50/60 Hz UL 489 100.0 kA Icu 480 V AC 50/60 Hz UL 489","Device short name":"MTZ1 08 HB","Network Frequency":"50/60 Hz","Poles description":"3P","Device Application":"Distribution","Nbr. of units in pkg.":"1","Product or Component Type":"Switch disconnector","Integral instant protection":"22.0 kA","[Ie] rated operational current":"800 A 104 °F (40 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3ad4b1883145a73db1be6a126b0df5c2.pdf","sourceUrl":"https://www.se.com/us/en/product/LV839120/automatic-switch-disconnector-masterpact-mtz1-08-hb-800a-ul-3p-fixed/"},"ai":{"faq":[{"question":"What is the breaking capacity of LV839120?","answer":"200 kA Icu at 240 V AC and 100 kA Icu at 480 V AC, both under UL 489. The integral instant protection is set at 22 kA."},{"question":"Where can I buy LV839120?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the rated current of LV839120?","answer":"800 A rated operational current at 40 °C (104 °F) ambient."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839120","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/LV839120 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}