{"product_id":"square-d-ma364501121-circuit-breaker","title":"Square D | MA364501121 | Circuit Breaker | 450A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Square D MA364501121 Circuit Breaker — a high-capacity protection solution engineered for demanding electrical installations. Boasting a 450A rating, a 3-pole configuration, and a 600V operating range, it delivers robust, reliable protection for large feeders and heavy-duty motor circuits in industrial environments.\u003c\/p\u003e \u003cp\u003eThis model is designed for maintenance, retrofit, and replacement projects where exact specifications matter. Use the MA364501121 as the primary reference to guarantee compatibility within your panel or switchgear lineup. Confirm fit and ratings before ordering to avoid mismatches.\u003c\/p\u003e \u003ch2\u003eKey benefits\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current capability:\u003c\/strong\u003e 450A rating supports heavy-duty feeders and large motors without unnecessary interruptions due to overload.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection:\u003c\/strong\u003e Coordinated protection across all live conductors in 600V systems for enhanced safety and reliability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V suitability:\u003c\/strong\u003e Designed for industrial environments and higher-voltage mains that demand dependable protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility-first approach:\u003c\/strong\u003e The part number MA364501121 is the most reliable reference for ensuring correct fit, ratings, and interchangeability within Square D ecosystems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFlexible deployment:\u003c\/strong\u003e Well-suited for new installations, retrofits, or replacements in panels designed for 450A, 3-pole, 600V breakers.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eUse cases and installation scenarios\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003ePower distribution panels in manufacturing lines with large three-phase loads\u003c\/li\u003e \u003cli\u003eMotor control centers requiring a 450A, 600V protective device\u003c\/li\u003e \u003cli\u003eRetrofit projects where an existing 450A, 3-pole, 600V breaker is being replaced with an equivalent model\u003c\/li\u003e \u003cli\u003eMaintenance cycles that demand a reliable, spec-matched breaker to minimize downtime\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy choose this Square D breaker\u003c\/h2\u003e\n\u003cp\u003eOpting for a breaker that aligns precisely with your panel’s schedule reduces compatibility risk and simplifies ordering. The MA364501121’s 450A, 3-pole, 600V configuration is a common fit for legacy Square D installations that require consistent performance and a matching spec reference.\u003c\/p\u003e \u003ch2\u003ePractical tips for success\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eBefore purchasing, cross-check the panel schedule or labeling to confirm that a 450A, 3-pole, 600V device matches your requirements.\u003c\/li\u003e \u003cli\u003eKeep the MA364501121 part number handy as the most reliable reference when coordinating with distributors or service personnel.\u003c\/li\u003e \u003cli\u003eStore spares in labeled bins by amperage, pole count, and voltage rating to simplify future replacements and maintenance planning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426347372706,"sku":"MA364501121","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-ma364501121-circuit-breaker-450a-3-pole-600v-269.webp?v=1789560862","url":"https:\/\/www.ampstate.com\/products\/square-d-ma364501121-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}