POWER SOURCE CIRCUIT BREAKER

摘要

A purpose of the invention is to provide a power source circuit shut off device capable of preventing an operator from receiving electric shock. The power source circuit shut off device 10 includes a plug 1 having a terminal metal fitting 3 and a housing 4 to which the terminal metal fitting 3 is attached, and a plug attachment section 2 having a second terminal metal fitting 6 to be connected to the terminal metal fitting 3 and a second housing 7 to which the second terminal metal fitting 6 is attached. The housing 4 has a second opening section 4E at its side face perpendicular to its bottom face at a second housing 7 side, the second opening section 4E being adapted for attaching the terminal metal fitting to the housing 4. The terminal metal fitting 3 and the second terminal metal fitting 6 are connected to the second housing 7. The second housing 7 has a closing wall 7E which closes the second opening section 4E in a state that the housing 4 is positioned at the terminal contact position at which the housing 4 is not yet accommodated in the second housing 7.