Patent ID: 6876290

Claim:
A switch comprising: a casing defining an interior space and having a bottom; first and second conductive blades arranged in the interior space and mounted to the bottom, the first and second blades having tails extending beyond the bottom for external connection; a conductive strip made of a material that bends from a normal operation condition to a breaking condition when subject to a temperature rise, the strip having an end fixed to the first blade and an opposite, free end; a conductive seesaw plate rotatably supported in the casing and in electrical connection with the second blade, the seesaw plate being rotatable between engaged position where a first end of the seesaw plate engages the free end of the conductive strip thereby forming an electrical connection between the first and second blades and a disengaged position where the first end of the seesaw plate disengages from the conductive strip thereby electrically disconnecting the second blade from the first blade; wherein with the conductive strip at the normal operation condition and the seesaw plate at the engaged position, when an excessive current flows through the conductive strip, the temperature of the conductive strip rises, causing the conductive strip to bend to the breaking condition and breaking the electrical connection between the first and second blades; and a link coupled between the conductive strip and the seesaw plate, the link being configured to impose no constraint to both the conductive strip and the seesaw plate when the conductive strip is in the normal operation condition and also allowing the conductive strip to bend freely to the breaking condition; wherein with the conductive strip in the breaking condition, when the seesaw plate is moved to the disengaged position, the link drives the conductive strip to move in unison with the seesaw plate to the normal operation condition.