{"product_id":"square-d-mga36300-300a-600v-3-pole-plug-in-circuit-breaker","title":"Square D MGA36300 - 300 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eWhen you need dependable branch-circuit protection for panelboards and load centers in residential, commercial, or light industrial settings, the Square D MGA36300 arrives through AmpState. This 3-pole plug-in molded case circuit breaker is rated at 300 A and 600 V, built to interrupt faults quickly and safely while preserving system continuity.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e for rapid installation and simple field replacement, minimizing downtime during panel maintenance or upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e combines thermal overload protection with instantaneous magnetic tripping for short-circuit events, delivering stable, repeatable protection you can rely on.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole, 300 A, 600 V capability\u003c\/strong\u003e ideal for 3-phase feeders and main circuits in mid-size panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-loadcenter compatibility\u003c\/strong\u003e designed to fit with matching Square D OEM load centers and panelboards, ensuring correct fit, mounting, and trip coordination.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple sectors\u003c\/strong\u003e suitable for residential, commercial, and light industrial installations where robust protection is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e MGA36300\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 300 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Plug-in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho should consider it?\u003c\/h3\u003e \u003cp\u003eElectric contractors, facilities managers, and maintenance teams responsible for larger panelboards and load centers will value the combination of a high current rating with quick, reliable plug-in installation. If your system runs three-phase power and demands solid protection against overloads and faults, this MGA36300 is designed to keep equipment safe and downtime minimal.\u003c\/p\u003e \u003ch3\u003eTips for best results\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eEnsure your panelboard is compatible with Square D MGA-series breakers and rated for 600 V and 300 A service.\u003c\/li\u003e \u003cli\u003eFollow manufacturer torque specifications for plug-in breakers during installation to maintain secure connections.\u003c\/li\u003e \u003cli\u003eKeep spares on hand for rapid replacement during service windows to reduce downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355337019554,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_49160524-a227-46d1-b339-ce6dbb3d5073.png?v=1764691411","url":"https:\/\/www.ampstate.com\/products\/square-d-mga36300-300a-600v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}