Which of the following best describes the purpose of an Oil Circuit Breaker?

An Oil Circuit Breaker (OCB) is specifically designed to interrupt electrical flow in emergency situations. Its primary function is to protect electrical circuits by disconnecting the flow of current under fault conditions, such as short circuits or overloads. The oil within the circuit breaker not only serves as an insulator but also helps to cool and quench the arc that occurs when the breaker operates to interrupt the current. This makes the ability to interrupt electrical flow the most critical feature of an OCB, aligning with its role in safeguarding both the electrical infrastructure and equipment from damage during fault conditions.