Abstract: Disclosed is a protective element, comprising an insulator, a fusible element, and electrodes, wherein the insulator covers a meltable part of the fusible element. The electrodes are disposed at two ends of the insulator. Two ends of the fusible element are electrically connected to the electrodes. Wave absorbing structures are disposed around the fusible element in the insulator, a plurality of protrusions is provided on the wave absorbing structures, and the protrusions face the fusible element. Distances exist between the wave absorbing structures and the fusible element.

Abstract: Disclosed is a protective element, comprising an insulator, a melt and electrodes, wherein the insulator covers a meltable part of the melt. The electrodes are disposed at two ends of the insulator. Two ends of the melt are electrically connected to the electrodes. Wave absorbing structures are disposed around the melt in the insulator, a plurality of protrusions is provided on the wave absorbing structures, and the protrusions face the melt. Distances exist between the wave absorbing structures and the melt. The present invention improves the shape of a melt and designs wave absorbing structures which can resist an impact, energy waveforms can be destroyed, impact energy is dispersed to the periphery so as to achieve the aim of wave (energy) absorbing, a breaking performance of a protective element can be at least doubled by virtue of the design of the wave absorbing structure, a manufacturing process is simple, and the protective element is suitable for batch production.