{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839301","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839301","canonicalUrl":"https://aoctrl.com/schneider/LV839301","factsUrl":"https://aoctrl.com/api/mcp/products/LV839301","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Masterpact MTZ3 40 HF, LV839301, automatic switch disconnector, 4000 A, 3P, drawout, 100 kA Icu at 480 V AC UL 489, ArcBlok.","salesMarkdown":"The LV839301 is a Masterpact MTZ3 40 HF automatic switch disconnector rated 4000 A at 40 °C, 3-pole, drawout chassis mount. The integral instant protection of 170 kA is the let-through capability of the ArcBlok mechanism, not the withstand; it limits peak fault energy during the first half-cycle. Drawout mounting means the moving portion withdraws on telescoping rails for inspection or swap without unbolting line and load conductors — standard for main breakers in switchgear where uptime matters. Connection pitch is 9.06 in (230 mm) between phase centers, which matches standard low-voltage switchgear bus spacing. ## Deployment context This is a chassis-mount drawout device for low-voltage distribution switchgear — not a panelboard breaker. The 31.07 in (789.1 mm) width and 18.8 in (478.1 mm) height set the cutout and mounting footprint; verify the existing cradle or cell accommodates the MTZ3 frame before ordering. Depth of 16.8 in (426.8 mm) includes the extended position for drawout racking.","metaTitle":"LV839301 Masterpact MTZ3 40 HF, 4000A, 3P, Drawout, 100 kA I","metaDescription":"LV839301 Masterpact MTZ3 40 HF automatic switch disconnector, 4000 A rated current, 100 kA Icu at 480 V AC UL 489, 3P drawout. Active production, sourced to order.","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":"31.07 in (789.1 mm)","title":"LV839301","Height":"18.8 in (478.1 mm)","description":"Automatic, switch disconnector, Masterpact MTZ3, 40 HF, 4000A, UL, 3P, drawout, ArcBlok","Control Type":"Push-button","Network type":"AC","Mounting Mode":"Drawout","lifecycle_stage":"current","Connection pitch":"9.06 in (230 mm)","Mounting Support":"Chassis","Breaking capacity":"100.0 kA Icu 240 V AC 50/60 Hz UL 489 100.0 kA Icu 480 V AC 50/60 Hz UL 489 85.0 kA Icu 600 V AC 50/60 Hz UL 489","Device short name":"MTZ3 40 HF","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":"170.0 kA","[Ie] rated operational current":"4000 A 104 °F (40 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/688e4068b4169475f513718d3cb0aadb.pdf","sourceUrl":"https://www.se.com/us/en/product/LV839301/automatic-switch-disconnector-masterpact-mtz3-40-hf-4000a-ul-3p-drawout-arcblok/"},"ai":{"faq":[{"question":"What is the breaking capacity of LV839301 at 480 V AC?","answer":"100 kA Icu at 480 V AC 50/60 Hz under UL 489. That is the maximum short-circuit current the switch disconnector can safely interrupt at that voltage level."},{"question":"What are the physical dimensions of LV839301?","answer":"Width 31.07 in (789.1 mm), height 18.8 in (478.1 mm), depth 16.8 in (426.8 mm). The depth includes the drawout extended position."},{"question":"Where can I buy LV839301 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839301","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/LV839301 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}}