{"product_id":"westinghouse-ma3450s-circuit-breaker","title":"Westinghouse | MA3450S | Circuit Breaker | 450A | 3-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eThe Westinghouse MA3450S Circuit Breaker is a rugged, bolt-on protection device designed for demanding electrical environments. With a 450A rating, a 3-pole configuration, and 600V capacity, this breaker is built for reliable overcurrent protection in maintenance, retrofit, and replacement projects where exact specifications matter.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\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:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e MA3450S\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy the bolt-on design matters\u003c\/h3\u003e\n\u003cp\u003eThe bolt-on mounting provides a secure, vibration-resistant connection to compatible bus bars, which is crucial in high-demand installations. This design simplifies field replacement and maintenance, reducing downtime and ensuring consistent protection for your feeders and main service circuits in industrial and commercial settings.\u003c\/p\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMain service disconnects in commercial facilities and light manufacturing\u003c\/li\u003e \u003cli\u003eRetrofit projects where hardware must match MA3450S specifications or compatible Westinghouse gear\u003c\/li\u003e \u003cli\u003eSpare parts inventory for scheduled maintenance programs\u003c\/li\u003e \u003cli\u003eFeeder protection in large distribution panels for warehouses, data centers, and industrial spaces\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it compares to alternatives\u003c\/h3\u003e\n\u003cp\u003eFor installations requiring robust, long-lasting mounting, the 3-Pole bolt-on MA3450S offers a tangible advantage over other form factors that may require different mounting hardware or present greater risk of loosening over time. This model is designed to deliver dependable interrupting performance at 600V, making it a practical choice when the existing panel specification calls for a MA3450S-compatible bolt-on solution.\u003c\/p\u003e \u003ch3\u003eImportant fit and safety notes\u003c\/h3\u003e\n\u003cp\u003eAlways verify fit and ratings against your equipment before ordering. The \u003cstrong\u003eMA3450S\u003c\/strong\u003e part number is the most reliable reference for compatibility with Westinghouse panels and chassis designed for bolt-on protection devices of this spec.\u003c\/p\u003e \u003ch3\u003ePractical installation tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnsure the electrical system is fully de-energized and follow proper lockout\/tagout procedures before installation.\u003c\/li\u003e \u003cli\u003eInspect the breaker and mounting hardware for integrity and corrosion prior to mounting.\u003c\/li\u003e \u003cli\u003eConfirm three-pole alignment with the panel’s bus bars to ensure a secure, proper connection.\u003c\/li\u003e \u003cli\u003eAfter installation, perform verifications of tripping characteristics and system safety checks by a qualified technician.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46427175125154,"sku":"MA3450S","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/westinghouse-ma3450s-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}