The magne X interrupter is used in series with low current primary protection devices such as a Bay-O-Net Fuse or Magne X The magne X interrupter.

The magne X interrupter highly efficient current-limiting section minimizes the effects of high fault current stresses on equipment and the distribution system. Its minimum interrupting rating is coordinated with that of a low current interrupter to avoid undesirable low current operation; yet its maximum interrupting rating will clear the highest fault currents likely to occur. Higher continuous currentratings can be achieved by connecting two fuses in parallel.

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