PPN safety locks

The PPN series fuses equipped with current - limiting fusible inserts of general purpose like gG are intended for protection of electric equipment of plants and electric networks of three - phase alternating current with a rated voltage up to 1000 V of frequency of 50 and 60 Hz, and with a rated voltage of direct current up to 440 V inclusive at overloads and short circuits. PPN series fuses with a fusible insert like am are intended for protection of electric motors and devices of regulation of their speed against currents of short circuit.