Westinghouse Electric Corporation MC3800WK Molded Case Switch

Westinghouse MC3800WK Molded Case Switch is a 3-pole, 800 A device designed for manual power switching and circuit isolation in high-capacity three-phase power systems within commercial and industrial electrical distribution. As a molded case switch in the MC series, it features bolt-on, panel-mounted installation and is rated for 600 V AC with a 10 kA interrupt rating, making it suitable for switchgear, motor control centers, industrial machinery, and large distribution systems requiring a reliable disconnect. Typical applications include manufacturing facilities, HVAC infrastructure, and other heavy-duty power distribution environments where high-amperage switching is essential. Common replacements include Eaton MC3800WK, Cutler-Hammer MC3800WK, and Square D ME36800NS.