{"product_id":"square-d-ma266001121-circuit-breaker","title":"Square D | MA266001121 | Circuit Breaker | 600A | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eDiscover the Square D MA266001121 Circuit Breaker, a genuine replacement designed for reliability in maintenance, retrofit, and replacement applications where exact specifications matter.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 600 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e MA266001121\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number is the best reference for compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this breaker is a smart choice\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eGenuine Square D component engineered to integrate seamlessly with Square D panel systems\u003c\/li\u003e \u003cli\u003eIdeal for straightforward maintenance or retrofits where exact specs must be preserved\u003c\/li\u003e \u003cli\u003eSupports high-demand 600 A circuits, offering robust protection for demanding equipment\u003c\/li\u003e \u003cli\u003eClear rating labeling and durable construction designed for long service life in electrical rooms\u003c\/li\u003e \u003cli\u003eMaintains consistent protection within the broader Square D protection ecosystem\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eRoutine maintenance on industrial or commercial electrical installations that rely on 600 V protection\u003c\/li\u003e \u003cli\u003eRetrofit projects where upgrading or renewing protective devices is required without changing panels\u003c\/li\u003e \u003cli\u003eReplacement for a worn or tripped 600 A circuit breaker to restore critical equipment protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility and installation tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways verify panel labeling for the accepted frame style and amperage rating before ordering\u003c\/li\u003e \u003cli\u003eUse the MA266001121 part number as the primary reference to confirm compatibility with your device\u003c\/li\u003e \u003cli\u003eIf you have any uncertainty, consult your electrical documentation or a licensed professional before installation\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eBring reliability back to your protection system with the Square D MA266001121 Circuit Breaker — a precise, purpose-built solution for 600 A, 600 V applications. Add it to your toolkit today to ensure quick, compatible replacements and uninterrupted operation of essential equipment.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426398425250,"sku":"MA266001121","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-ma266001121-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}