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Fuse Failure Relay Type : B68F3


It consists of a low impedance coil, metal rectifier and load resistance in each phase. During normal condition the relay coil is shorted with the fuse. Once the fuse blows, current flows through the relay and it operates. The load resistance 1K will come into picture when the system is lightly loaded.


  • Alarm relay used for supervision of fuses in the protection circuits
  • Can be used for protection blocking where the protection relay’s operating time is more than 30 ms
Standard Features
Operates for single, two and three phase fuse failures
Has an operating time of 30 ms
Has contact arrangement of 2M self reset, 1M 1B self reset and HR flag
Unit Price: USD 300.00


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