Service plug

A service plug configured to be attached to and detached from a connector disposed on a power supply circuit between a battery and a load of a vehicle, the service plug comprising:

• a body including a pair of power bus bars configured to be connected to the power supply circuit by being connected to a first terminal of the connector;
• and
• a switching lever including an interlock terminal that brings the power supply circuit into a closed state when being in a state of conduction with a second terminal of the connector, and brings the power supply circuit into an open state when being in a state of non-conduction with the second terminal of the connector;
• and
• a power interruption portion that brings at least the interlock terminal of the switching lever into a state of non-conduction with the second terminal to bring the power supply circuit into the open state by using an actuator that is operated in accordance with a collision detection signal for the vehicle.