{"product_id":"square-d-mhb36300-circuit-breaker","title":"Square D | MHB36300 | Circuit Breaker | 300A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D MHB36300 circuit breaker—a robust 3-pole protection solution engineered for demanding 600V systems. With a 300A rating, it is designed to safeguard large commercial and industrial equipment, keeping motors, drives, and heavy loads running reliably while preventing costly electrical faults.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 300A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 600V\u003c\/li\u003e \u003cli\u003ePart reference: MHB36300\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this model stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eGenuine \u003cstrong\u003eSquare D\u003c\/strong\u003e build quality you can trust for consistent protection and predictable performance in critical applications.\u003c\/li\u003e \u003cli\u003eSpecifically suited for \u003cem\u003emaintenance, retrofit, and replacement\u003c\/em\u003e projects where exact specs matter, helping you standardize protection across your panels.\u003c\/li\u003e \u003cli\u003e3-pole configuration provides balanced interruption across all three phases, essential for protecting motors, conveyors, HVAC systems, and other three-phase equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eImportant compatibility note: before placing an order, verify fit and ratings against your panel documentation. The \u003cstrong\u003eMHB36300\u003c\/strong\u003e part number is the best reference to ensure a precise match with your Square D panel and system requirements.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or restoring protection in industrial control panels and switchgear\u003c\/li\u003e \u003cli\u003eReplacing worn or obsolete breakers in maintenance programs\u003c\/li\u003e \u003cli\u003eRetrofits that require a 300A, 3-pole, 600V solution to support high-load equipment\u003c\/li\u003e \u003cli\u003eProjects aiming for standardized protection across multiple rooms or facilities\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical considerations and installation tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eConfirm panel model, bus style, and voltage rating align with \u003cem\u003e600V\u003c\/em\u003e and 300A requirements.\u003c\/li\u003e \u003cli\u003eDe-energize equipment and follow lockout\/tagout procedures before any replacement.\u003c\/li\u003e \u003cli\u003eConsult your electrical documentation or a qualified technician if you’re unsure about compatibility—the correct part number minimizes risk of mismatch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eCompared to generic substitutes, the Square D MHB36300 delivers reliable, industry-standard protection designed to integrate smoothly with Square D panels and assemblies. This alignment can simplify maintenance schedules, improve system coordination, and reduce the complexity of sourcing compatible components for your 3-phase installations.\u003c\/p\u003e \u003cp\u003eReady to safeguard your high-load electrical system with a trusted, compatible 300A, 3-pole, 600V circuit breaker? Add the Square D MHB36300 to your cart and ensure durable protection for your critical equipment today.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426343407778,"sku":"MHB36300","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-mhb36300-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}