Westinghouse FDB3100L Molded Case Circuit Breaker

The Westinghouse FDB3100L molded case circuit breaker is a 100 A, 3-pole, 3-phase thermal-magnetic protective device in the FDB Frame with an L configuration, designed for panel- or switchboard-mounted installations and 50/60 Hz service. It provides overcurrent and short-circuit protection for branch circuits and equipment, making it well suited for motor control centers, switchboards, industrial automation panels, conveyors, HVAC infrastructure, and other high-amperage industrial systems. Maintenance teams, OEMs, and electrical integrators rely on the FDB3100L for replacement, retrofit upgrades, and ongoing protection of industrial electrical distributions.