| 摘要 |
A varistor with an alloy-type thermal fuse is disclosed in the invention, comprising a varistor, an alloy-type thermal fuse and a closed cavity.The varistor and the alloy-type thermal fuse are provide in the closed cavity, with one surface of varistor being close to one surface of the thermal fuse, their leads extending outside the closed cavity which is filled with the alloy flux. In the invention, varistor and thermal fuse are incorporated, so that the speed of heat transfer is fast and it is convenient to installation in use. At the function of the flux, the melted alloy may shrink toward to two leads rapidly, becoming two balls. This design can choose different melting point and different size of the alloy according to different requirement to match the varistor of different peak current.A variety of specification of the varistor can be made by the invention and can be applied broadly. |
