| 摘要 |
PROBLEM TO BE SOLVED: To facilitate wiring work of the branch breaker of the primary shift circuit of a distribution board, in which the branch breaker of the primary shift circuit and a plurality of branch breakers are arranged in parallel with each other on the side part of a main bar. SOLUTION: A large number of branch breakers 3 and a branch breaker 4 of a primary shift circuit are arranged in parallel with each other on the side part of a main bar 2. A power supply terminal 4a of the branch breaker 4 of the primary shift circuit is connected to the secondary terminal of a junction terminal block 5, which is placed near the secondary terminal 4b of the branch breaker 4. A primary terminal 1a of a main breaker 1 or the power supply line of the main breaker 1 is connected to the primary terminal of the junction terminal block 5, which can secure a wide working space. |
