Eaton Cutler-Hammer WMS2D40 Supplementary Protector

The Eaton Cutler-Hammer WMS2D40 acts as a specialized supplementary protector engineered to interrupt fault currents and provide essential disconnect functionality within complex industrial electrical systems. Specified with a rated current of 40 amperes and configured for 2-pole operation, this device isolates downstream branch circuits from the power source during overloads or short-circuit events. Unlike standard main circuit breakers, this WMS-series unit is intended for supplementary roles, ensuring that a primary breaker protects the feeder while controlling the integrity of individual load branches. Installation professionals utilize this 40A 2P supplementary protector in applications involving multiple contactors, motor starters, or distribution blocks requiring reliable trip characteristics under varying electrical loads. Integration into enclosed control panels allows facility managers to secure machinery against damage caused by excessive current draw without compromising the coordination of the wider protection scheme.