| 摘要 |
PROBLEM TO BE SOLVED: To provide a ground-fault interrupter with temperature rise circuit interrupting blocks restrained, and maintenance properties improved. SOLUTION: The ground-fault interrupter is provided with two pairs of circuit interrupting blocks 100 with a power source side and a load side connection terminals at either end, and a pair of ground-fault interrupting blocks 101 incorporating a ground-fault interrupting unit on one end and a circuit interrupting unit on the other, each circuit interrupting block 100 and each ground-fault interrupting block 101 are arrayed in parallel with each other. A recessed part is provided at an underside of a body of each circuit interrupting block 100 and each ground-fault interrupting block 101, and a zero-phase current transformer CT and three conductive bars 103 penetrating the zero-phase current transformer CT are housed in the recessed part. Further, the conductive bars 103 of the circuit interrupting blocks 100 arranged outside are arranged outside the conductive bars 103 of the circuit interrupting blocks arranged inside, while, each circuit interrupting block 100 is supported by the conductive bars 103 in free turning with the zero-phase current transformer CT as a center. COPYRIGHT: (C)2009,JPO&INPIT
|
