Circuit breaker protection for industrial circuits

CONTINUITY of service, reduction in maintenance cost, and increase in safety to operators and property have made it necessary to improve the protective devices used in the distribution circuit. In the past, this protection has been provided by knife switches and fuses. The construction of circuit breakers occupying small space has recently been made possible through increase in design knowledge, and development of new materials, together with an increase in knowledge of arc phenomena and of arc interrupters.