{"product_id":"westinghouse-lb3300-circuit-breaker","title":"Westinghouse | LB3300 | Circuit Breaker | 300A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Westinghouse LB3300 circuit breaker delivers dependable overload protection for 600V electrical systems. With a 300 Amp rating and a 3-Pole design, it’s built for three-phase service in maintenance, retrofit, and replacement projects where exact specifications are required. The LB3300 part number is the clearest reference for compatibility with Westinghouse panels and enclosures.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 300 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\u003ePart number:\u003c\/strong\u003e LB3300\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal use:\u003c\/strong\u003e Maintenance, Retrofit, Replacement\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this matters for your panel\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise compatibility:\u003c\/strong\u003e Rely on the LB3300 part number as the best reference to match your existing installation and protection scheme.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTriple-phase protection:\u003c\/strong\u003e A 3-Pole design safeguards all three phases, helping to prevent imbalances and downstream faults in commercial or industrial systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V readiness:\u003c\/strong\u003e Rated for typical 3-phase distribution environments, making it suitable for a wide range of equipment and panels that require robust overcurrent protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInstallation efficiency:\u003c\/strong\u003e Designed for straightforward replacement in compatible Westinghouse panels, supporting faster maintenance windows and reduced downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits from the LB3300\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance teams performing panel refurbishments or part replacements in facilities with existing Westinghouse protection schemes.\u003c\/li\u003e \u003cli\u003eElectricians planning retrofit upgrades where a reliable, OEM-referenced component is essential for safety and consistency.\u003c\/li\u003e \u003cli\u003eFacilities managers seeking a long-term, predictable replacement path for 600V, 3-phase distribution systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number LB3300 is the best reference to ensure your replacement aligns with your panel’s specifications and protection settings.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46424416288930,"sku":"LB3300","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/westinghouse-lb3300-circuit-breaker-300a-3-pole-600v-511.webp?v=1789355634","url":"https:\/\/www.ampstate.com\/products\/westinghouse-lb3300-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}