Relays single protection



DEIF manufactures a comprehensive range of tested single-function protection units. The microprocessor-based, fully automatic controllers integrate maximum protection functionalities as standard.

Related products

Current relay

Current relay RMC-142D

  • Earth fault protection at two levels
  • Built-in filter for 3rd harmonic
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mountin
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Current relay

Current relay RMC-131D

  • Differential current relay
  • ANSI code 87
  • Measurement of 3-phase currents
  • Non-stabilised measurement
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • Extra change-over relay contact for signalling
  • 35 mm DIN rail or base mounting
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Current relay

Current relay RMC-122D

  • Short circuit and over-current
  • I>>: 100 to 400 %, I>: 50 to 150 %
  • Combined functionality
  • Short circuit relay (I>>)
  • ANSI code 50 and 51
  • Measurement of 3-phase currents
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
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Current relay

Current relay RMC-121D

  • Short circuit and over-current circuit relay (I> + I>>)
  • ANSI code 50 and 51
  • Measurement of 3-phase currents
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
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Current relay

Current relay RMC-111D

  • Short circuit relay (I>>)
  • ANSI code 50 and 51
  • Measurement of 3-phase currents
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mountin
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Current relay

Current relay RMC-132D

  • Double over-current relay (I> + I>)
  • ANSI code 50 and 51
  • Measurement of 3-phase currents
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
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Undervoltage relay, U< and U<

Undervoltage relay, U< and U< RMV-132D

  • Under-voltage (double).
  • U<: 80 to 100 %, U<: 80 to 100 %.
  • Under-voltage/over-voltage (U< + U>)
  • ANSI code 27 and 59
  • 3-phase measurement
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
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Undervoltage and overvoltage relay, U< and U>

Undervoltage and overvoltage relay, U< and U> RMV-112D

  • Under- and over-voltage.
  • U>: 100 to 120 %, U<: 80 to 100 %.
  • Under-voltage/over-voltage (U< + U>)
  • ANSI code 27 and 59
  • 3-phase measurement
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
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Overvoltage relay, U> and U>

Overvoltage relay, U> and U> RMV-122D

  • Over-voltage (double).
  • U>: 100 to 120 %,U>: 100 to 120 %.
  • Under-voltage/over-voltage (U< + U>)
  • ANSI code 27 and 59
  • 3-phase measurement
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
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Over-/undervoltage relay, U> and U<

Over-/undervoltage relay, U> and U< RMV-142D

  • Under- and Over-voltage.
  • U>: 100 to 120 %, U<: 80 to 100 %.
  • Single phase measurement.
  • Under-voltage/over-voltage (U< + U>)
  • ANSI code 27 and 59
  • 3-phase measurement
  • LED indication of fault condition
  • Timer-controlled tripping
  • LED indication for activated relay
  • 35 mm DIN rail or base mounting
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