| 摘要 |
PROBLEM TO BE SOLVED: To provide a distribution board wherein it can be known that a working current has exceeded a specified value without continuously watching the distribution board, and it can be prevented that a breaker operates and all power sources are suddenly cut off. SOLUTION: This distribution board is equipped with a breaker 20, current detection current transformers 30 which are fixed to the breaker 20, detect working currents, and output current detection signals, an operation processing means 35 which receives the current detection signals from the current detection current transformers 30, and outputs an alarm signal when a working current exceeds a specified value, and an alarm voice generating means 42 which informs excessive use of electricity with voice, according to the alarm signal from the operation processing means 35. |
