{"product_id":"square-d-lh36300cba-circuit-breaker","title":"Square D | LH36300CBA | Circuit Breaker | 300A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eProtect critical electrical systems with the trusted reliability of Square D. The LH36300CBA circuit breaker delivers robust overcurrent protection for demanding three-phase applications, combining precise ratings with a proven form factor that installers and technicians rely on for maintenance, retrofit, and replacement projects.\u003c\/p\u003e \u003cp\u003eDesigned to align with the exact specifications of your existing Square D installation, this 300 A, 3-pole, 600 V breaker ensures a seamless fit and dependable performance in commercial and light industrial environments. When uptime matters, you want a breaker whose compatibility and reliability you can trust—and the LH36300CBA is built to deliver just that.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 300 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole (three-phase)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference for compatibility:\u003c\/strong\u003e Part number LH36300CBA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBest use:\u003c\/strong\u003e Maintenance, retrofit, and replacement where matching specs are required\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cp\u003eCompared to generic substitutes, the Square D LH36300CBA is purpose-built to integrate with Square D panels and distribution systems. Its 3-pole design supports three-phase circuits common in commercial equipment, motors, and processing gear, providing coordinated protection across all phases. The 300 A rating makes it suitable for high-demand feeders, while the 600 V rating ensures safe operation within typical industrial and commercial power networks.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing aging or failed breakers in existing Square D panels without altering the panel layout\u003c\/li\u003e \u003cli\u003eRetrofits that require exact part numbers to match trip characteristics and physical fit\u003c\/li\u003e \u003cli\u003eMaintenance swaps during scheduled panel servicing to minimize downtime\u003c\/li\u003e \u003cli\u003eUpgrading or consolidating three-phase protection in commercial electrical distributions\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical guidance for installation and compatibility\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings to ensure seamless replacement. The part number LH36300CBA serves as the best reference for compatibility with your panel. Use this as a concrete, unambiguous identifier when cross-checking against your panel’s documentation, ensuring that the breaker’s trip characteristics and mounting footprint align with the system requirements.\u003c\/p\u003e \u003cp\u003eIn practical terms, this LH36300CBA breaker helps you:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMinimize downtime by supporting straightforward replacements with the same electrical characteristics\u003c\/li\u003e \u003cli\u003eMaintain consistent protection across all three phases, reducing unbalanced loads and potential fault conditions\u003c\/li\u003e \u003cli\u003ePreserve system reliability in environments where three-phase distribution and high-current protection are critical\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor professionals seeking dependable, Drop-in replacement protection that respects existing Square D ecosystems, the LH36300CBA 300 A, 3-Pole, 600 V circuit breaker is a precise, trusted choice that aligns with maintenance, retrofit, and replacement workflows.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426350583970,"sku":"LH36300CBA","price":2010.0,"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-lh36300cba-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}