{"product_id":"square-d-pla34040cu63ae1-circuit-breaker","title":"Square D | PLA34040CU63AE1 | Circuit Breaker | 400A | 3-Pole | 480V","description":"\u003cdiv\u003e\n\u003cp\u003eUnlock reliable power distribution with the Square D \u003cstrong\u003ePLA34040CU63AE1\u003c\/strong\u003e circuit breaker—a \u003cstrong\u003e400A\u003c\/strong\u003e, \u003cstrong\u003e3-pole\u003c\/strong\u003e device designed for \u003cstrong\u003e480V\u003c\/strong\u003e three-phase systems. Built for maintenance, retrofit, and replacement projects where exact specifications matter, this breaker ensures your panel stays protected and compliant with Square D standards.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 480V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e PLA34040CU63AE1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Square D\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this model stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise compatibility\u003c\/strong\u003e: The PLA34040CU63AE1 is the best reference for matching Square D panels in need of a 400A, 3-pole 480V circuit breaker.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRobust 3-pole design\u003c\/strong\u003e: Ideal for distributing power in three-phase systems, supporting balanced protection across each leg.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliability-driven for industrial use\u003c\/strong\u003e: Engineered to maintain consistent protection for critical feeders in commercial and manufacturing environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear fit guidance\u003c\/strong\u003e: Use the part number as your compatibility anchor to minimize ordering errors and downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed or obsolete breaker in 480V, 3-phase panels where a 400A protection device is required.\u003c\/li\u003e \u003cli\u003eRetrofit projects that upgrade existing equipment to higher protection levels without changing the panel architecture.\u003c\/li\u003e \u003cli\u003eMaintenance inventories for facilities with heavy electrical loads, ensuring quick swaps to minimize production interruptions.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation \u0026amp; compatibility tips\u003c\/h3\u003e\n\u003cp\u003eBefore ordering and installation, \u003cstrong\u003econfirm fit and ratings\u003c\/strong\u003e—the part number PLA34040CU63AE1 is your best reference for compatibility. Check the panel model and bus configuration to ensure seamless integration with your Square D distribution system. Follow standard electrical safety practices, including lockout\/tagout procedures, when handling high-current equipment.\u003c\/p\u003e \u003cp\u003eDesigned for professionals who demand precise, dependable protection at 480V, this Square D circuit breaker helps keep critical equipment safe while simplifying maintenance and retrofit workflows. Add it to your cart to ensure fast, accurate replacements in your 3-phase electrical infrastructure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426749862050,"sku":"PLA34040CU63AE1","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_16d3a2fb-5d93-424c-9206-5031ec4b178f.png?v=1765492977","url":"https:\/\/www.ampstate.com\/products\/square-d-pla34040cu63ae1-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}