Abstract: A power source circuit shut off device includes a plug having a terminal metal fitting and a housing to which the terminal metal fitting is attached, and a plug attachment section having a second terminal metal fitting and a second housing to which the second terminal metal fitting is attached. The housing has a second opening section at its side face perpendicular to its bottom face at a second housing side, the second opening section being adapted for attaching the terminal metal fitting to the housing. The terminal metal fitting and the second terminal metal fitting are connected to the second housing. The second housing has a closing wall which closes the second opening section in a state that the housing is positioned at the terminal contact position at which the housing is not yet accommodated in the second housing.

Abstract: A downsized, low-cost connector which can prevent an external force applied to an electric wire from transmitting to an electrical connection portion is provided. The connector includes a terminal connected to an end of an electric wire and a housing receiving the terminal. The terminal includes an electrical connection portion and a wire connection portion electrically connected with a mating terminal and a core wire of the electric wire, respectively. The wire connection portion includes a bottom wall positioning the core wire of the electric wire on a surface thereof and a pair of crimping pieces crimped to the core wire. The housing includes: a housing main body arranged to receive an end of the electric wire and the terminal connected thereto; and a cover body mounted to the housing main body so as to sandwich the electric wire between the cover body and the housing main body.

Abstract: There is provided a power supply circuit, in which cost reduction is realized by reducing the number of electric wires. An inverter 3 and a motor 4 are supplied with power by a high-voltage battery 21. Relays 22a to 22c are provided between the high-voltage battery 21 and the inverter 3. Both ends of each of relay coils C provided to the relays 22a to 22c are connected to an ECU 5, and the ECU 5 controls a current flowing through the relay coils C and thereby controls the turning on and off of the relays 22a to 22c. A service plug 6 is detachably provided between batteries making up the high-voltage battery 21, and when the service plug 6 is detached, the supply of power from the high-voltage battery 21 to the inverter 3 and the motor 4 is blocked and when the service plug 6 is attached, the supply of power from the high-voltage battery 21 to the inverter 3 and the motor 4 is enabled.