Westinghouse FB3045SMRL Molded Case Circuit Breaker

The Westinghouse FB3045SMRL Molded Case Circuit Breaker delivers 45 A of thermal-magnetic overcurrent protection in a three-pole, FB Frame MCCB, designed for reliable installation in industrial power distribution. This unit is panel or switchboard mounted and serves as branch circuit and equipment protection across motor control centers, switchboards, automation panels, conveyors, and other manufacturing equipment, helping protect connected machinery from overloads and short circuits in demanding environments. It operates on three-phase power at 50/60 Hz and uses thermal and magnetic trip elements to respond to overloads and faults quickly, supporting medium-amperage applications in industrial power systems. The FB3045SMRL carries NSB (New Surplus Box) packaging and is specified for 3P, 45 A, Westinghouse molded case circuit protection in industrial settings.