{"product_id":"square-d-ma36300-300a-3-pole-plug-in-circuit-breaker","title":"Square D MA36300 - 300 A, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D MA36300 is a 300A, 3-pole plug-in molded case circuit breaker engineered to protect panelboards and load centers from overcurrent and short-circuit events. Designed for fast, painless installation and effortless replacement, this breaker keeps critical electrical systems running with minimal downtime.\u003c\/p\u003e \u003ch2\u003eWhy this breaker stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e enables swift installation and simple swap-out during maintenance or upgrades, reducing service interruptions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by responding precisely to both gradual overloads and sudden short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e provides balanced, three-phase protection suitable for a variety of commercial and light industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e300A rating\u003c\/strong\u003e handles substantial branch circuit protection, aligning with larger distribution panels and heavy-duty layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e is engineered to work with matching Square D OEM load centers and panelboards, ensuring a seamless integration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments where reliable overcurrent and short-circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical specifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e MA36300\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 300A\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 \u003ch2\u003eIdeal applications and benefits\u003c\/h2\u003e\n\u003cp\u003eThis plug-in breaker shines in panelboard and loadcenter upgrades, new construction, and service upgrades where a robust 3-pole solution is required. Use cases include protection of large branch circuits in commercial spaces, distribution to multi-area facilities, or any setup demanding dependable three-phase protection with quick replacement capabilities. The plug-in design minimizes downtime during maintenance, while the thermal-magnetic trip ensures dependable performance across a range of fault conditions.\u003c\/p\u003e \u003ch2\u003ePractical considerations and setup tips\u003c\/h2\u003e\n\u003cp\u003eFor optimal results, pair the MA36300 with compatible Square D OEM load centers and panelboards to maintain coordinated protection and electrical Code compliance. When replacing a breaker, ensure the panelboard is de-energized and follow all safety protocols. This unit is designed for environments where a robust, high-capacity 3-pole solution is required, balancing reliability with straightforward installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355330203810,"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_b26d7d64-5acf-465e-9726-4b81e19d4b6a.png?v=1764691393","url":"https:\/\/www.ampstate.com\/products\/square-d-ma36300-300a-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}