| 摘要 |
A thermal switch comprising a conductive casing defining a switch axis, a terminal connected to the casing and a terminal entering the casing in insulated relationship thereto, and within the casing a normally solid fusible pellet and a resilient contact means normally in electrically conductive relationship with the insulated terminal and which is compressed in the axial direction against said normally solid fusible pellet, whereby said contact means is normally expanded in the radially outwards direction to contact the casing and thereby establish an electrical connection between the casing and the insulated terminal, the pellet having a preselected temperature of disintegration at which it will collapse to release the axial pressure on the resilient contact means and thereby permit its radial contraction.
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