A new type of fuse

Abstract

The utility model discloses a novel fuse belongs to electrical protection element technical field. It includes the tubular body, a pair of contact, fine sand and melt, and the tubular body top is equipped with a pair of sand hole, and the melt is the sheet structure of annular array of several pieces, and the melt has the inward fold mark with the through -hole and top, and the contact is installed at the both ends of tubular body, and the melt is connected between the contact, and the tubular body inside fills fine sand. When filling sand, the fold mark guides fine sand flow, avoids the melt and breaks under the impact, and when normal working, the melt conducts current, and the through -hole enhances heat dissipation, and when overload or short circuit, the melt fuses and cuts off the circuit, and fine sand absorbs electric arc energy and realizes arc extinguishing. The utility model discloses simple structure, and the melt is not easy to break, and the fuse is stable, and the arc extinguishing effect is good, can be widely applied in circuit overload and short circuit protection scene.

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