{"product_id":"square-d-ma36450-450a-3-pole-plug-in-circuit-breaker","title":"Square D MA36450 - 450 A, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D MA36450 from AmpState is a heavy-duty, 450-amp, 3-pole plug-in molded case circuit breaker designed to deliver reliable branch-circuit protection in panelboards and load centers. Built for quick, clean installations and straightforward field replacements, this breaker helps keep critical electrical systems safe from overloads and short circuits with minimal downtime.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this breaker stands out\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e enables rapid installation and seamless replacement, reducing service interruptions and downtime during panel upgrades or maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit interruption, ensuring dependable performance under varying load conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is engineered to work with matching Square D load centers and panelboards, promoting coordinated protection and simplified field servicing.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current reliability\u003c\/strong\u003e with a 450 A rating supports demanding feeders in commercial and light industrial environments without compromising safety or performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile protection\u003c\/strong\u003e suited for residential, commercial, and light-industrial electrical systems that require robust 3-pole protection for dry\/grounded circuits and critical equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eUpgrading or replacing a failed 3-pole breaker in large panelboards where 450 A of protection is needed for high-load feeders.\u003c\/li\u003e \u003cli\u003eField service installations where quick plug-in replacements minimize downtime and keep critical circuits online.\u003c\/li\u003e \u003cli\u003eNew or retrofit projects in commercial facilities and light-industrial settings that require safe, reliable 3-pole protection for main feeders or distribution panels.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWho should consider this MA36450 breaker?\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eElectricians and service technicians performing panel upgrades, equipment installations, or breaker replacements in commercial and light-industrial spaces.\u003c\/li\u003e \u003cli\u003eFacility managers looking to standardize high-current protection across multiple panelboards with compatible Square D components.\u003c\/li\u003e \u003cli\u003eSpecifiers designing robust protection schemes for demanding electrical systems where quick maintenance and dependable trip performance are priorities.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003c\/p\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 MA36450\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 450 A\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 \u003cp\u003eWith its plug-in architecture and compatible design, the MA36450 is a practical, future-ready choice for professionals who value fast serviceability and dependable protection. Whether you’re stocking your service van for urgent replacements or specifying components for a panel modernization, this 3-pole 450 A breaker aligns with Square D’s OEM configurations to deliver coordinated, reliable performance across your panel ecosystem.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355330334882,"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_6f793f09-105c-4ca0-bd5d-dc584007ebc5.png?v=1764691395","url":"https:\/\/www.ampstate.com\/products\/square-d-ma36450-450a-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}