You’ll find on the pages below all the main definitions on fuses and electrical equipments.
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Glossary for low voltage fuses
“a” Fuselink (formerly Back-Up Fuselink) A current limiting fuselink capable of breaking under specified conditions all currents between the lowest current indicated on its operating time-current characteristic and its rated breaking capacity. Ambient Air Temperature (Ta) The ambient air temperature is that of the air surrounding the fuse (at a distance of about 1 m …
Glossary for low voltage switchgear and control gear
Circuit Breaker A switching device capable of making, carrying and breaking currents under normal circuit conditions and also making, carrying for a specified time, and breaking currents under specified abnormal circuit conditions such as those of short circuit. Disconnector A mechanical switching device which, in the open position, complies with the requirements specified for the …
North american classes of fuses
The North American fuse industry has developed a number of Classes or Standards for fuses with voltage ratings of 600 volts or less. These classes include basic physical specifications and performance requirements.
Class CC 600V; up to 30A; 200kA Cylindrical contact, 10 x 38mm with rejection feature. Class G 300V; up …