HYBRID-TYPE POWER SOURCE SWITCHING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a hybrid-type power source switching device that is compact, requires no large installation space, and has excellent working efficiency for maintenance.SOLUTION: A hybrid-type power source switching device permits independent drawing of: a circuit breaker part unit 1 accommodating a power source switching circuit breaker therein; a semiconductor switch unit 2 accommodating a semiconductor switch therein; and a control part unit 3 accommodating a power source switching controller therein. Bypass switches are preferably respectively mounted on bypass circuits on both power source sides of the power source switching circuit breaker.