| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a distribution board which includes two types of branch breakers different in interception capacity and suppresses that a temperature of an electric connection body exceeds an upper limit of a temperature range where the branch breaker can be used. <P>SOLUTION: The distribution board 1 includes a first branch breaker 3, a second branch breaker 4 and a branch breaker substrate (substrate) 5, and both breakers are connected to a main breaker 2 through the electric connection body 6. A private space A1 to which only the first branch breaker 3 can be fitted and a shared space A2 to which the first branch breaker 3 and the second branch breaker 4 can be fitted are set in the branch breaker substrate 5. The shared space A2 is set in a position further away from the main breaker 2 more than the private space A1. A fitting preventing means preventing the second branch breaker 4 from being fitted to the private space A1 is constituted of a protrusion installed in the second branch breaker 4 and a through-hole 51 penetrated in the branch breaker substrate 5. <P>COPYRIGHT: (C)2010,JPO&INPIT |
