Earth Leakage Relays & Core Balance Transformers

Earth Leakage Relays & Core Balance Transformers

Product Features

  • 3 phase earth leakage protection
  • 30mA to 5A trip current
  • Instantaneous or up to 5 second delay
  • Test and reset functions
  • DIN rail mounting enclosure
  • 5 different sizes of core balance transformer

Earth leakage relays monitor the leakage of current to earth on 3 phase electrical systems. The earth leakage relay is used in conjunction with a core balance transformer which are available in five different sizes to cover all sizes of three phase installations. The relays are available with either a fixed 30mA or 300mA instantaneous trip point or with a user adjustable trip point and time delay both adjustable through rotary switches on the front of the relay. The relays are available auxiliary powered from either 110Vac or 230Vac. All relays have reset and test functions and two LED's to indicate both power and trip status. The relays are DIN rail mounting and the RN-R has a clear front cover enabling a tamper-proof seal to be fitted if required.


Key Terms: RN-0.03 - RN-0.3 - RN-R - WN35 - WN70 - WN105 - WN140 - WN210 - Earth Leakage - Relay - Core Balance - Transformer