{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LV839300","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LV839300","canonicalUrl":"https://aoctrl.com/schneider/LV839300","factsUrl":"https://aoctrl.com/api/mcp/products/LV839300","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric MasterPact MTZ3, LV839300, UL 489 circuit breaker, 5000 A rated, 3 pole, drawout mount, H breaking capacity, 600 VAC, without Micrologic trip unit, with ArcBlok.","salesMarkdown":"## What this MasterPact MTZ3 brings to a switchboard The LV839300 is a MasterPact MTZ3 50 H drawout circuit breaker from Schneider Electric, rated for 5000 A continuous at 104 °F (40 °C) on a 3-pole configuration. It's built for UL 489 applications up to 600 VAC, with an H breaking capacity code — meaning it delivers 100 kA Icu at 240 VAC, 100 kA Icu at 480 VAC, and 85 kA Icu at 600 VAC, all per UL 489. The drawout cradle lets you rack the breaker out for maintenance or replacement without pulling the whole enclosure apart — a real time-saver when you're working a line-down window. ## Short-time withstand and coordination headroom One spec that matters for selectivity studies is the rated short-time withstand current (Icw): 85 kA for 0.5 seconds per UL 489. That means the breaker can carry 85 kA through its main contacts for half a second without welding or damage, which gives downstream breakers time to clear a fault before this one trips. For a site electrical engineer working a coordination study, that 85 kA Icw figure is the number that decides whether you can use this as a main with smaller feeders downstream, or whether you need a higher-rated frame. The breaker measures 31.07 in wide by 18.8 in high by 16.8 in deep (789.1 x 478.1 x 426.8 mm). The drawout mounting sits on a base plate with rails, and the connection pitch is 9.06 in (230 mm) between phases. That's a big footprint — plan your enclosure depth and door swing accordingly. The 5000 A rating also means you're looking at serious buswork; the lugs or bus connections need to handle that continuous current without derating. ## Protection and durability specs This breaker comes without a Micrologic trip unit — you need to specify and install the trip unit separately based on your protection curve requirements. The integral instantaneous protection is set at 153...187 kA, which is the magnetic-only trip level for bolted faults. Mechanical durability is rated at 5000 cycles per ANSI C37.50, electrical durability at 1000 cycles under the same standard. Maximum breaking time is 25...30 ms, and the maximum closing response time is 70 ms. The rated breaking and making capacity is 90 kA. That's solid for a main breaker that might see only a handful of operations per year but needs to clear a fault when it happens.","metaTitle":"Schneider Electric LV839300 MasterPact MTZ3 5000A 3P Drawout","metaDescription":"Schneider Electric LV839300 MasterPact MTZ3 circuit breaker, 5000A rated, 3-pole, drawout mount, H breaking capacity, 600VAC UL 489. Active production, sourced to order. Request qu","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":"LV839300","Height":"18.8 in (478.1 mm)","description":"Circuit breaker, MasterPacT MTZ3, UL 489, max 5000A rated, 3 pole, drawout mount, H breaking cap, 600VAC, w/o Micrologic trip unit, w/ ArcBlok","Control Type":"Push-button","Network type":"AC","Product name":"MasterPact MTZ3","Mounting Mode":"Drawout","lifecycle_stage":"current","Connection pitch":"9.06 in (230 mm)","Mounting Support":"Base plate Rails","Device short name":"MTZ3 50 H","Network Frequency":"50/60 Hz","Performance Level":"100 kA Icu 240 V AC 50/60 Hz UL 489 100 kA Icu 480 V AC 50/60 Hz UL 489 85 kA Icu 600 V AC 50/60 Hz UL 489","Poles description":"3P","Device Application":"Protection","Line Rated Current":"5000 A 104 °F (40 °C)","Electrical durability":"1000 cycles ANSI C37.50","Maximum breaking time":"25...30 ms","Mechanical durability":"5000 cycles ANSI C37.50","Nbr. of units in pkg.":"1","Breaking capacity code":"H","Circuit breaker CT rating":"5000 A","Product or Component Type":"Circuit breaker","Integral instant protection":"153...187 kA","Maximum closing response time":"70 ms","Rated breaking and making capacity":"90 kA","[Icw] rated short-time withstand current":"85 kA 0.5 s UL 489"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/54b54c1de87fc263555af33b203457b0.pdf","sourceUrl":"https://www.se.com/ca/en/product/LV839300/circuit-breaker-masterpact-mtz3-ul-489-max-5000a-rated-3-pole-drawout-mount-h-breaking-cap-600vac-w-o-micrologic-trip-unit-w-arcblok/"},"ai":{"faq":[{"question":"Where can I buy LV839300 and what is the lead time?","answer":"We source the LV839300 through independent distribution channels and quote it to order against an RFQ. Availability and current lead time are confirmed at quote time — send the RFQ and we'll get you the latest numbers."},{"question":"What is the closest alternative to LV839300 in the MasterPact MTZ3 family?","answer":"Within the MasterPact MTZ3 family, the closest alternative would be a different breaking capacity code (N or S) or a different rated current. The LV839300 is the 5000 A, H breaking capacity, 3-pole drawout variant without a trip unit. An alternative with the same frame but a different rating would require changing the trip unit and potentially the breaking capacity class."},{"question":"What compliance documentation does Schneider provide for LV839300?","answer":"The LV839300 is UL 489 listed per the product description. It carries the UL mark for the US and Canadian markets. RoHS and REACH compliance documentation is typically available from Schneider Electric's product compliance portal. The product is designed for 50/60 Hz networks."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LV839300","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/LV839300 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}}