| 摘要 |
<p>The invention relates to electric fuse and solves the problem of providing a fuse which is cheap to manufacture, has an insignificant space requirement but still is capable of operating at relatively high rated current intensities, such as of the order of magnitude of 100 A. This makes it practically feasible to protect by use of a fuse also such electric circuits which normally are unprotected, such as the current supply circuit of the electric cranking motor of a vehicle engine. A fuse according to the invention does not have a separate holder or mounting device. It does insted form an integrated unit consisting of a central melt bridge (3) between end portions (1, 2) for connection of the fuse in an electric circuit. To preserve the mechanical shape and integrity of the fuse also upon melting its end portions (1, 2) are held together by a central jacket (8). Preferably, the jacket is constituted in a way permitting ocular observation of bridge (3) through the jacket wall.</p> |
