Cutler-Hammer C306NN3 molded case circuit breaker (SER.A1 USNT) is a protective device designed to interrupt current in electrical circuits when an overcurrent condition occurs. The model C306NN3 identifies a specific unit within the Cutler-Hammer molded case breaker lineup and reflects its Series A1 designation. It provides overcurrent protection for distribution circuits in electrical panels and equipment where molded case breakers are used to safeguard wiring and devices from fault currents.
