A vacuum circuit breaker can be differentiated from other circuit breakers on the basis of its arc quenching technique. In this type, the interruption of current flowing through arc takes place in vacuum. This technology is widely used for applications working on medium voltage. The vacuum circuit breakers are also suitable for high voltage applications, however they are not commercially viable yet. The vacuum circuit breaker consist of a vacuum interrupter. This chamber is used for the basic operations of circuit breaker such as opening and closing of contacts carrying electric current and arc quenching. The vacuum interrupter is made by symmetrically arranging ceramic insulators in a steel arc chamber. The hermetically tight vacuum chamber present in vacuum circuit breaker eliminates any external impacts on the device. Thus the properties of the vacuum interrupter remain constant throughout the life cycle, giving it a clear edge over the other types of interrupters. The m...