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Haul Truck, Shovel and Drag Line Replacement Parts

Darrah Electric Company offers replacement power semiconductors for electric shovels, drag lines and haul trucks.

Darrah’s specialty is older, obsolete power semiconductor designs. Our experience with GTO Thyristors, calibrated mounting clamps, heat sinks and gate drives, make us a valuable source for OEM replacement parts and service.

A partial list of items available through Darrah include:

  • GTO Thyristors
  • SCR’s Thyristors
  • Rectifier Diodes
  • IGBT Modules
  • Voltage Sensors
  • Current Sensors
  • Semiconductor Clamps
  • Replacement Stack Assemblies
  • DC contactors
  • Heat Sinks
  • Fuses
  • Snubber Capacitors


Gate Turn-Off Thyristors, GTO’s, Freewheeling and Snubber Diodes