Eaton Cutler-Hammer 1887-3 Circuit Breaker Assembly

The Eaton Cutler-Hammer 1887-3 Circuit Breaker Assembly is a protective electrical device used to interrupt current and shield circuits from overloads, short circuits, and fault conditions in power distribution systems. The product data specifies voltage ratings of 480V and 440V for this model, indicating suitability for installations operating within that voltage range. As part of Eaton's Cutler-Hammer lineup, the 1887-3 assembly is designed for integration into panels or switchgear where safe isolation is required during maintenance or fault events. Understanding the exact electrical characteristics—such as the amperage rating, trip curve, and mounting footprint—requires consulting the official Eaton specification sheet to ensure a proper fit and ongoing system protection. This description focuses on the core facts available for model 1887-3 and emphasizes its voltage capability within a protective-reliability context.