| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a circuit breaker with a function of suppressing arc caused by disconnection of a wiring cable in a system, as a circuit breaker that is applied to a DC system such as a photovoltaic power generation system. <P>SOLUTION: In the circuit breaker for a DC circuit mounting, on an enclosure case 7, a multi-pole contact mechanism 10, a contact open/close mechanism 11, an overcurrent trip device 13, a power supply side terminal 8, and a load side terminal 9, an arc suppression circuit 15 including a capacitor element 16 is connected between the + pole terminal 9a and the - pole terminal 9b of the load side terminal, and encased in the enclosure case 7. For a DC system such as a photovoltaic power generation system, the circuit breaker 4 with a built-in capacitor element is connected hierarchically to a wiring path in the system and used. <P>COPYRIGHT: (C)2012,JPO&INPIT |
