CBI Electric: Australia

RCT Toroidal Transformers


  • For use where earth leakage protection of distribution systems and equipment is required.


  • Hole diameters: 60mm, 110mm, 200mm
  • Split core: 110mm and 200mm types, ideal for retro-fitting to existing cable systems
  • Insulation Voltage: Only limited by insulation/air spacing of primary conductors to insulated case of toroidal
  • Primary Currents: Limited by conductor sizes which pass through hole.
  • Two twisted pairs of earthed screened conductors (0.5mm min.) required between toroidal and relay (one pair for type RTD1DA relay). Earth screen to be earthed at one point only. Max. length : 25m