| 摘要 |
<p>A thermally sensitive electrical protector including a snap acting actuator (2) in the form of a stressed sheet of bimetal mounted within an electrically insulating housing (1) together with a pair of contacts (4, 5) and a leaf spring (3) having one of the contacts (4) mounted thereon so that the contacts are sprung to the closed position. A lost motion connection is provided between the tongue (7) of actuator (2) and the leaf spring (3) such that upon operation of the actuator (2) with a rise in temperature the tongue acts to pull said leaf spring (3) to open the contacts (4, 5), there being prior to such operation no force transmitting connection between the tongue (7) and the leaf spring (3), so as to avoid mutual stressing of the spring (3) and actuator (2).</p> |
