Bi-stable assembly for a switchable electrical apparatus

An electrical apparatus comprising:

• a switch assembly comprising:
• a first electrical contact;
• and
• a second electrical contact configured to move relative to the first electrical contact, wherein the switch assembly is closed when the second electrical contact is in contact with the first electrical contact, and the switch assembly is open when the second electrical contact is not in contact with the first electrical contact;
• an actuator coupled to the second electrical contact and configured to move the second electrical contact relative to the first electrical contact;
• a bi-stable assembly configured to drive the actuator, the bi-stable assembly comprising:
• a cam;
• and
• a flexible member comprising a first holding portion, a second holding portion, and a middle portion between the first holding portion and the middle member;
• and
• an operating interface coupled to the cam, wherein
• the operating interface is configured to rotate the cam such that the cam makes contact with and moves along the middle portion of the flexible member between a first stable position and a second stable position, the first holding portion of the flexible member is configured to hold the cam in the first stable position, and the second holding portion of the flexible member is configured to hold the cam in the second stable position.