Home | Projects | 15 KV Vacuum Ground Fault Interrupter Design and Build

15 KV Vacuum Ground Fault Interrupter Design and Build

Power Precision designed and built three 15 KV vacuum interrupters to supply underground substations for construction of the tunnels for the Ottawa Light Rail Transit.


  • Built and tested to CSA standards

Features and Electrical Ratings

  • 15kV, 500A, 3 phase Vacuum Circuit Interrupter
  • 95kV BIL, 20 KA and other ratings available
  • Ground Fault Protection and Pilot Wire Monitoring for underground mining applications
  • Available with self-powered control transformer
  • Adjustable phase overcurrent protection with programmable time current curves
  • Pushbutton or remote closing options available
  • 15kV female mining connector
  • Dead front breaker compartment with insulated conductors


  • Rugged heavy steel freestanding enclosure
  • Zinc based primer and paint for corrosion protection
  • Hinged and gasketed doors with stainless steel fastening hardware
  • Steel skid style base for easy mobility


Mining and Metals

Contact Info

1780 Connolly Ave
Bathurst, New Brunswick
E2A 4W7