Westinghouse DA3300 Three-Phase Circuit Breaker

The Westinghouse DA3300 Three-Phase Circuit Breaker provides dependable overcurrent protection for demanding industrial power distribution, delivering 300 A at 240 V across three poles. This panel-mount, thermal-magnetic breaker interrupts overloads and short circuits to protect industrial electrical panels, motor control centers, and other heavy-duty distribution equipment. It is commonly used in industrial control panels, power distribution systems, manufacturing facilities, commercial buildings, and motor control equipment that require reliable overcurrent protection and circuit isolation. Key specifications include Manufacturer Part Number DA3300, 3-pole design, 300 A current rating, 240 V voltage rating, and a panel-mount form factor, with interruption provided by a thermal-magnetic mechanism. The DA3300 is suited for replacement, retrofit, and repair of industrial and commercial power distribution systems, and is compatible with industrial and commercial panels. Common replacements listed include Eaton Molded Case Circuit Breaker, Square D PowerPact Circuit Breaker, and Siemens Sentron Circuit Breaker.