| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily identify an apparatus of a distribution board whose conductive state has been changed compared with that at previous inspection, and to improve the operation efficiency of inspection. <P>SOLUTION: The distribution board 1 includes a circuit breaker 3 which has a function for displaying conduction information, a housing 2 which has a door 21 and incorporates the circuit breaker 3, a sensing part 4 for sensing the opening and closing of the door 21, and a communication line 5 which conveys a sensing signal from the sensing part 4 to the circuit breaker 3. When the door 21 is opened, the circuit breaker 3 changes a display state depending on whether or not the display contents are changed from those in the previous open state of the door 21. The circuit breaker 3 whose conductive state is changed from that at previous inspection for a conductive state is easily known when the door 21 of the distribution board 1 is opened, so that operation efficiency at the inspection of the distribution board 1 is improved. <P>COPYRIGHT: (C)2009,JPO&INPIT |
