Manual service disconnect for an electric circuit

A manual disconnect for an electric circuit, the manual disconnect comprising:

• a base including primary terminals and an interlock connector;
• and
• a plug assembly including fuse terminals and an interlock resistor assembly, the plug assembly movable relative to the base between a disconnected position wherein the fuse terminals are not engaged with respective primary terminals, a primary circuit engaged position wherein the fuse terminals are engaged with respective primary terminals, and an interlock position wherein the fuse terminals are engaged with respective primary terminals and the interlock connector is engaged with the interlock resistor assembly;
• wherein the plug assembly is moved in an insertion direction relative to the base to move the plug assembly from the disconnected position to the primary circuit engaged position, the plug assembly is moved in the insertion direction relative to the base and is rotated about an axis to move the plug assembly from the primary circuit engaged position to the interlock position.