| 摘要 |
PURPOSE:To facilitate wiring and connection of a relay unit and to protect the relay unit against overcurrent by disposing a power supply transformer for driving the relay unit in proximate thereto and connecting the power supply transformer with one branch breaker. CONSTITUTION:A main breaker 5, branch breakers 61-618, a current detector 7, a circuit breaker 8, a transformer 9 and a control section 10 are housed in a distribution board housing 1. Upper and lower parts of a circuit breaker fixing board are secured to supporting frames 11, 12 in adjacent to a branch breaker group fixing board. A circuit breaker 8 comprising a relay unit is fixed to the upper part of the circuit breaker fixing board and a power supply transformer 9 is fixed to the underside thereof in proximate to the circuit breaker 8. The power supply transformer 9 is connected with an adjacent branch breaker 618 and also connected with the relay units 22-25 of the circuit breaker 8. |
