Westinghouse MC3800F Molded Case Circuit Breaker

The Westinghouse MC3800F Molded Case Circuit Breaker is a high-capacity, three-pole protection device designed for industrial and commercial electrical distribution, commonly installed in switchgear assemblies, motor control centers, industrial machinery, and large power distribution systems to provide overcurrent and short-circuit protection. This 800 A frame-rated unit operates at 600 V AC with a 30 kA interrupt rating at 480 V, and it uses solid-state electronic protection with long-time and short-time trip functions to coordinate fault clearance. As part of the MC / SELTRONIC frame series, it offers interchangeable rating plug design for adjustable protection settings and features bolt-on mounting and bolt-on connections for panel-mounted installation in commercial and industrial environments. Common replacements include Eaton MC3800F, Cutler-Hammer MC3800F, and Square D ME36800LSIG.