![]() The rated current (I rat) of a fuse link should approximately correspond to the operating current of the device or assembly unit which is to be protected (in accordance with the ambient temperature and rated current-definition, which means the permitted continuous currents). ![]() DIN, ISO, JASO, partially maximum values common for Littelfuse are stated as well. The voltage drop (U N) is measured according to standards e.g. If the operating voltage is very low, the fuse link's natural resistance (voltage drop) must possibly be taken into consideration. The rated voltage (U N) of a fuse link has to be at least equal or higher than the operating voltage of the device or assembly unit which is to be protected with the fuse link. (Further the level of technology, the details of the actually valid implementation provisions, the safety-principle "human beings, animals and material assets must be protected against danger," as well as the qualification of the installed components should be taken into account - self-responsibility of the manufacturer of electrical devices.) Selection Explanations and Recommendations The following international regulations and recommendations in their currently valid version are valid for fuse links: The current flow is interrupted by the melting of the fuse wire in which the current flows. ![]() ![]() Automotive Fuse Link Definition and SpecificationsĪutomotive use links are self-acting break appliances for the protection of electrical devices against unsuitable current loads. ![]()
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