Power supply cut-off apparatus of microwave oven

A microwave oven comprising:

• a housing including first and second disconnectable panels, the housing forming a cooking chamber;
• a door mounted on the housing for opening and closing the cooking chamber;
• an electric cord for supplying electric power to the oven;
• a switch disposed on the first panel and including a press button, the switch being operable to cut off electric power supplied from the cord when the button is not pressed;
• and
• a cover including a mounting portion and a button-covering portion, the mounting portion mounting the cover on the first panel for movement between a first position wherein the button-covering portion covers the button, and a second position wherein the button-covering portion exposes the button, the button-covering portion arranged to move away from the button when moving to its second position, the cover being biased toward the first position;
• the second panel including an actuating structure for moving the cover to the second position against the bias and for pressing the exposed button, in response to the second panel being assembled to the first panel;
• the actuating structure including a button-pressing member movable in a direction toward the button for pressing the button, the button-covering portion being immovable in said direction when in its first position, whereby both the button-covering portion and the button-pressing member are prevented from pressing the button.