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Fuse Wires

المؤلف:  GEORGE A. HOADLEY

المصدر:  ESSENTIALS OF PHYSICS

الجزء والصفحة:  P-363

2025-12-09

710

Another useful purpose to which the heating effect is put is in fuse wires, which are made of some high-resistance alloy having a low melting point. If a short piece of such a wire is put into an electric circuit, it will melt if the current increases beyond its carrying capacity, and break the circuit.

FIG.2- Cartridge Fuse

 In this way a circuit In this way a circuit designed to carry a certain current may be protected from an accidental overload. Fuses vary in form from the simple fuse

wire to the wire with prepared ends (Fig. 1) called a fuse link, and the cartridge form of inclosed fuses that can be slipped into the terminals of the fuse block (Fig. 2).