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Cylindrical fuse HRC series
current-limitinghigh-voltageHRC

cylindrical fuse
cylindrical fuse
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Characteristics

Configuration
cylindrical
Type
current-limiting
Other characteristics
high-voltage, HRC

Description

H.R.C. fuses are normally used to protect small banks and/or three-phase capacitors, designed in accordance with DIN and IEC standards for protection against thermal and dynamic effects, caused by short circuit current exceeding the tolerated value in magnitu- de and duration. The main characteristics ofH.R. C. fuses are: • low minimum trip current; • low dissipated power; • low voltage of the electric arc; • high breaking capacity; • high current limiting; • easy maintenance; • small dimensions. H.R.C. fuses are the best solution in situations where using other protection systems would require an excessi- ve cost compared to that of the whole system. To obtain the maximum current limitation, and therefore the best protection, the rated current of the chosen fuse must be selected at the lowest possible level compared to the value of the current equal to about 2 times In. The fuse cartridge striker, besides performing the function of signalling tripping, can be associated with the device for turning off the operating-disconnecting switch and/or with the external indicator device. Besides H.R. C. fuses, accessories can be supplied such as the specific fuse holder bases and the trip signalling devices.

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