Delat RD4B2 – Residual current device

  • Instantaneous (t = 0) at I Δn 30mA
  • Selectable set point 30mA…30A (19 ranges)
  • Instantaneous display as percentage of I Δn
  • Alarm + pre-alarm or alarm function with 2 SPDT contact
  • Field-selectable negative or positive security (fail safe)
  • Automatic permanent test
  • Automatic restart (up to 10 attempts) in case of transient earth fault
  • “No trip” TEST (local, without output relay tripping)
  • Sealable front frame
Datenblatt
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