{"product_id":"square-d-lga36400cu44x-circuit-breaker","title":"Square D | LGA36400CU44X | Circuit Breaker | 400A | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D LGA36400CU44X\u003c\/strong\u003e is a rugged 400A, 3-pole circuit breaker designed for demanding electrical environments. This OEM device is the right choice for maintenance, retrofit, or replacement projects where exact specifications matter, delivering reliable protection and consistent performance within Square D panel systems.\u003c\/p\u003e \u003cp\u003eWhether you’re upgrading an aging panel, swapping in a failed unit, or doing routine maintenance, this 3-pole breaker provides the robust current handling and clear trip protection needed in commercial or industrial applications. The part number LGA36400CU44X is the trusted reference for compatibility, so verify that this model matches your panel’s requirements before ordering.\u003c\/p\u003e \u003ch3\u003eKey specifications and what they mean for you\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A — ample capacity for high-demand circuits and main-breaker replacements in larger systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole — designed for three-phase electrical setups common in commercial power distribution.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e LGA36400CU44X — using the exact model ensures proper fit, electrical characteristics, and compatibility with Square D panels.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance projects where a precise, OEM replacement is required to restore original protection curves and trip behavior.\u003c\/li\u003e \u003cli\u003eRetrofit upgrades in facilities transitioning to higher-current distribution without changing the overall panel architecture.\u003c\/li\u003e \u003cli\u003eReplacement of a failed or obsolete breaker in systems that depend on Square D reliability and compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this model stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAuthentic Square D reliability:\u003c\/strong\u003e Built to meet the stringent standards of commercial and industrial electrical systems, delivering predictable performance under load.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility:\u003c\/strong\u003e The LGA36400CU44X part number is your best reference to ensure a correct fit across compatible Square D panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear path to compliance:\u003c\/strong\u003e Using the correct amperage and pole configuration reduces the risk of improper protection, helping you meet safety and code requirements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for a smooth installation\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways \u003cstrong\u003econfirm fit and ratings\u003c\/strong\u003e against your panel model before purchase. Even small deviations in model number can affect compatibility and protection characteristics.\u003c\/li\u003e \u003cli\u003ePrepare the workspace with the applicable safety procedures and ensure the main power is isolated before replacing a breaker.\u003c\/li\u003e \u003cli\u003eKeep a record of the part number (LGA36400CU44X) for future maintenance needs or when sourcing replacement units.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing the Square D LGA36400CU44X means prioritizing reliability, precise compatibility, and a clear path to dependable protection in your 400A, 3-pole installations. It’s the practical, exact-match solution for professionals who insist on OEM quality when maintenance, retrofit, or replacement is on the schedule.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425651019938,"sku":"LGA36400CU44X","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-lga36400cu44x-circuit-breaker-400a-3-pole-153.webp?v=1789437618","url":"https:\/\/www.ampstate.com\/products\/square-d-lga36400cu44x-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}