{"product_id":"westinghouse-hma3300-circuit-breaker","title":"Westinghouse | HMA3300 | Circuit Breaker | 300A | 3-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Westinghouse HMA3300 Circuit Breaker—built for reliability in demanding 3‑phase electrical systems. This bolt‑on unit is designed for maintenance, retrofit, and replacement projects where exact specifications matter, helping you protect valuable equipment and keep critical circuits running smoothly.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eThree-pole design for true 3‑phase protection\u003c\/b\u003e ensures coordinated interrupting across all phases, reducing imbalance and equipment stress.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e300A amperage rating\u003c\/b\u003e provides solid fault protection for high-current circuits without overloading the bus bar or conductors.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e600V operating capacity\u003c\/b\u003e suits common industrial and commercial panel boards, delivering dependable performance in demanding environments.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBolt-on mounting\u003c\/b\u003e offers a secure, serviceable installation with a robust connection to your panel, simplifying field replacements and maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePart number HMA3300 as the compatibility reference\u003c\/b\u003e is your best guide to matching footprint and ratings for a precise, trouble‑free fit.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis breaker is ideal for:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eRetrofits in older Westinghouse panels or systems that require matching specs to maintain consistent protection.\u003c\/li\u003e \u003cli\u003eReplacement projects where a proven, durable 3‑pole, 300A, 600V bolt‑on solution is needed.\u003c\/li\u003e \u003cli\u003eMaintenance scenarios where planned openings and part exchanges minimize downtime while preserving electrical integrity.\u003c\/li\u003e \u003cli\u003eUpgrades for circuits that demand higher reliability and coordinated trip behavior across all phases.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eHow to verify fit and ensure safe, compliant installation:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMatch the amperage (300A), number of poles (3), voltage rating (600V), and mounting style (bolt‑on) to your panel’s specifications.\u003c\/li\u003e \u003cli\u003eUse the part number HMA3300 as the primary reference for compatibility checks with your existing equipment.\u003c\/li\u003e \u003cli\u003eConfirm that the panel and bus bar footprint align with the bolt‑on mounting configuration before ordering.\u003c\/li\u003e \u003cli\u003eFollow local electrical codes and, if possible, involve a qualified electrician to confirm site compatibility and safe installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose the Westinghouse HMA3300 for your panel needs? It pairs a precise 3‑pole, 300A, 600V specification with a practical bolt‑on design, delivering straightforward retrofit and replacement experiences while maintaining reliable protection across your three‑phase systems. When exact compatibility matters, relying on the HMA3300 part reference helps you avoid mismatches and unnecessary downtime.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46427377074338,"sku":"HMA3300","price":10509.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/westinghouse-hma3300-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}