{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MGP26300","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"MGP26300","canonicalUrl":"https://aoctrl.com/schneider/MGP26300","factsUrl":"https://aoctrl.com/api/mcp/products/MGP26300","rawCanonicalId":null},"summary":{"shortDescription":"Square D PowerPacT M, electronic trip, unit mount breaker, 300A, 3 pole, 18 kA at 600 VAC, lugs off end.","salesMarkdown":"The Square D MGP26300 is a PowerPacT M electronic trip unit mount breaker rated 300 A, 3-pole, with an interrupting capacity of 18 kA at 600 VAC. It ships with lugs on the load end for direct cable termination — no separate lug kit needed for the line side termination. The 18 kA interrupting rating at 600 VAC tells you this breaker can safely clear a fault up to 18,000 A on a 600 V line without self-destructing or welding its contacts. That matters when you need selective coordination downstream or want to dial in the trip curve to match a transformer inrush or motor start profile without swapping the breaker. ## Deployment context This is a unit mount breaker — it bolts directly into a switchboard or panelboard bus, not a DIN rail or draw-out cassette. The lugs-off-end termination suits line-side feed from the bus and load-side cables running out to a downstream disconnect or MCC bucket. Panel builders will want to verify the mounting hole pattern and bus spacing against their enclosure before committing the cutout.","metaTitle":"Square D MGP26300 PowerPacT M Unit Mount Breaker, 300A, 3 Po","metaDescription":"Square D MGP26300 PowerPacT M electronic trip unit mount breaker, 300A, 3-pole, 18 kA at 600 VAC. Active production. Sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"title":"MGP26300","Category":"01205-MG, MJ UNIT MOUNT BREAKER","description":"Circuit Breaker, PowerPacT M, electronic trip, unit mount, 300A, 3 pole, 18 kA, 600 VAC, lugs off end","lifecycle_stage":"current","Nbr. of units in pkg.":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/915d0caf5e9254a2481814a01ff9ee3b.pdf","sourceUrl":"https://www.se.com/us/en/product/MGP26300/circuit-breaker-powerpact-m-electronic-trip-unit-mount-300a-3-pole-18-ka-600-vac-lugs-off-end/"},"ai":{"faq":[{"question":"What is MGP26300's listed category?","answer":"The MGP26300 is classified under category 01205-MG, MJ UNIT MOUNT BREAKER on this component line."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/MGP26300","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/MGP26300 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}