SERVICE PLUG, IN-VEHICLE POWER SUPPLY DEVICE, AND VEHICLE

A service plug that is attachable to and detachable from a power feed circuit unit is provided with first conductive members and second conductive members, and when the service plug is attached to the power feed circuit unit, the second conductive members become electrically connected to second connection terminals provided in the power feed circuit unit and supply power to an auxiliary load after the first conductive members become electrically connected to first connection terminals provided in the power feed circuit unit and supply power to a drive device.