| 摘要 |
PROBLEM TO BE SOLVED: To show a consumer the fact that a breaker performs a cutoff operation and an installation position on a power distribution board in a distinct state without altering the existing power distribution board itself when the breaker performs the cutoff operation.SOLUTION: A circuit configuration is employed in which first contacts 111 post-attached to a power distribution board 1 and second contacts 131 post-attached to operation levers BSL of breakers 11, 21, and 31 come into contact with each other as the operation levers BSL are displaced in breaker cutoff operation, and a turn-on circuit which turns on an LED lamp 211 and an acoustic circuit which generates sound from a speaker 231 are driven through the contacting so as to eliminate the need for alteration of the existing power distribution board 1 itself by enabling respective parts to be post-attached, thereby indicating the fact that the breakers 11, 21, and 31 perform cutoff operations mainly with "sound" and installation positions on the power distribution board 1 mainly with "light". |
