{"product_id":"square-d-ma264501121-circuit-breaker","title":"Square D | MA264501121 | Circuit Breaker | 450A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D MA264501121 circuit breaker is a rugged, three-pole overcurrent protection device engineered for demanding 600V three-phase electrical systems. Designed for maintenance, retrofit, and replacement applications, this 450A breaker delivers reliable interruption performance in industrial and commercial installations that rely on Square D standards for compatibility and safety.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 450 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Three-phase protection for balanced distribution and feeders\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose the MA264501121 for your system? It’s a purpose-built replacement that matches Square D specifications, ensuring proper fit, mounting, and electrical characteristics in compatible panels and feeders. This makes it an ideal choice for upgrading or restoring circuit protection in facilities with demanding load profiles and strict safety standards.\u003c\/p\u003e \u003ch3\u003eKey use cases and benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance: Replace aging or worn breakers in 600V, three-phase service without altering panel hardware or wiring.\u003c\/li\u003e \u003cli\u003eRetrofit: Update legacy installations to modern, code-compliant protection using a trusted Square D component.\u003c\/li\u003e \u003cli\u003eReplacement: Use as an exact reference part when panel catalogs or technician notes specify MA264501121.\u003c\/li\u003e \u003cli\u003ePanel compatibility: Designed to align with Square D enclosures and distribution boards that require a 3-pole, 450A 600V breaker.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eCompatibility note: Confirm fit and ratings before ordering. The part number MA264501121 is the best reference to ensure you’re selecting the correct replacement for your specific panel or distribution setup.\u003c\/p\u003e \u003cp\u003ePractical guidelines for installation and handling: verify the panel’s current rating and the breaker’s trip characteristics before integrating into live systems, follow proper locking and tagging procedures, and consult your facility’s electrical documentation to confirm that this 3-pole, 600V device meets your protection and coordination requirements.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426399309986,"sku":"MA264501121","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-ma264501121-circuit-breaker-450a-3-pole-600v-983.webp?v=1789569832","url":"https:\/\/www.ampstate.com\/products\/square-d-ma264501121-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}