Rustrol® Cathodic Isolator®



AMAC Distribute the solid-state Rustrol® Cathodic Isolator® - an essential component for safely isolating cathodically protected structures.

The Cathodic Isolator® effectively blocks the protective DC current needed for cathodic protection while providing a grounding path for; AC fault currents, lightning, induced AC, power switching surge currents or any other electrical disturbance. The result: Personnel and Equipment are safely protected against shock hazards.



Rustrol® Systems are designed to protect personnel and equipment from electrical disturbances. Rustrol® Systems effectively block cathodic protection DC voltages; all other electrical disturbances are freely conducted to ground, such as:

  • AC Fault Currents
  • Mitigation of induced AC Voltages
  • Lightning



    Cathodic Isolator® is available in common models with rated A.C. fault current exposure parameters in accordance with the attached Specification Sheet CI-01. Voltage thresholds and other operating parameters are to be specified by the customer.

    Benefits of the Cathodic Isolator:

  • Solid-state construction
  • Non-electolytic
  • Maintenance-free
  • Simplified installation
  • Versatile protection
  • Fail-safe operation
  • Test-proven performance

    Rustrol Cathodic Isolators.pdf