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Electro-Test and

Maintenance, Inc.

P.O. Box 1527

Rapid City, SD


Circuit Breaker Maintenance

Commissioning• Maintenance
Repair • Refurbish

Circuit breakers are one of the most vital pieces of equipment for your electrical systems reliability. ETMI can provide maintenance service of switchgear and outdoor equipment from the 15kV up to 345kV gas breakers. We can verify your breakers and protective relaying work properly.


  • Professionally trained and experienced personnel.
  • Experience on all type of circuit breakers and switchgear.
  • Detect and repair SF6 gas leaks.
  • On-site Field Services for quick response.
  • Access to large parts inventory for quick turnaround.
  • Individually designed maintenance plans to fit your needs.
  • Over 25 years of experience.