{"product_id":"square-d-lga36400u44x-circuit-breaker","title":"Square D | LGA36400U44X | Circuit Breaker | 400A | 600V | 35kA | Plug-In","description":"\u003cdiv\u003e\n\u003cstrong\u003eSquare D LGA36400U44X Circuit Breaker\u003c\/strong\u003e is a robust, plug-in protection device designed for reliable service in demanding electrical systems. With a 400 A rating, 600 V maximum, and a 35 kA interrupting capacity, this breaker is built to handle high-current loads and clear faults quickly, helping protect both equipment and personnel. \u003cp\u003eWhether you’re performing maintenance, retrofitting an existing installation, or replacing a failed unit, the LGA36400U44X delivers a dependable plug-in solution that slides into compatible Square D panels with minimal downtime. The plug-in design means faster swaps and less panel downtime—important for industrial environments where every minute counts.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A continuous current to protect large circuits and heavy equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e Up to 600 V, suitable for typical medium- to high-voltage industrial systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInterrupting capacity:\u003c\/strong\u003e 35 kA, providing a high level of protection against short-circuit faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Plug-in style for streamlined replacement in compatible Square D panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility reference:\u003c\/strong\u003e Part number LGA36400U44X is the best guide for matching fit and ratings.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this model stands out\u003c\/h3\u003e\n\u003cp\u003eUnlike generic replacements, this Square D unit is purpose-built for Square D panels and ecosystems. Its combination of high current capacity, voltage tolerance, and a strong fault-interruption rating makes it well-suited for demanding applications where reliability and rapid service restoration matter most—such as manufacturing lines, data centers, and commercial power distribution centers.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance replacements in existing Square D installations\u003c\/li\u003e \u003cli\u003eRetrofits to upgrade protection in aging panels\u003c\/li\u003e \u003cli\u003eSpare\/backup breaker for emergency readiness in critical facilities\u003c\/li\u003e \u003cli\u003eNew builds that require a proven, plug-in 400 A protection device\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation tips\u003c\/h3\u003e\n\u003cp\u003eAlways confirm fit and ratings before ordering. The part number LGA36400U44X serves as the primary compatibility reference, so cross-check it against your panel model and bus design. For installation, ensure the panel supports plug-in breakers of this style and follow standard safety procedures for electrical work. If your system operates near the upper limits of voltage or fault current, this unit’s 35 kA interrupt rating provides a robust margin of protection.\u003c\/p\u003e \u003cp\u003eChoosing the Square D LGA36400U44X means opting for a trusted, purpose-built solution designed to maintain electrical safety and minimize downtime in demanding environments. This is the go-to replacement for professionals who require precise specifications, reliable performance, and straightforward installation in their Square D-powered frameworks.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46424749932706,"sku":"LGA36400U44X","price":13719.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/square-d-lga36400u44x-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}