| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit breaker for wiring having an integral-type sealing structure, capable of rapidly discharging arc gas, which is discharged from an outlet of the conventional interrupter assembly, to the outside, without leakage through an intermediate passage space generated when a case and an auxiliary case are coupled to each other.SOLUTION: A circuit breaker for wiring according to the present invention includes: a case provided with terminal portions connected to a line side and a load side, respectively; an interrupter assembly 220 installed in the case, and provided with an arc gas outlet 222 for discharging arc gas generated at the inside of the interrupter assembly; an exhaust guide portion 230 disposed between the interrupter assembly 220 and the terminal portions, and provided with a discharge chamber 231 therein, to thus provide an arc gas passage between the arc gas outlet 222 and a vent chute 213 of the terminal portions; and an exhaust cover 240 which is mounted to the case with a structure covering the exhaust guide portion 230, and thus blocks the arc gas passage. |
