Edmundson
Legacy SCR Electrical Equipment
We identify and source legacy SCR and AC rig electrical parts. Send the complete part number or a clear nameplate photo.
Parts for Ross Hill SCR houses from the 1980s through later National Oilwell and NOV builds. Ask us about IEC Systems, IPS, Tech Power Controls, Hill Hayes, Hill Graham, Omron, IDM Equipment, Canrig and BOMCO.
Drives, motor controls, switchgear and power distribution for DC SCR and AC VFD rigs.
Send the full part number or a clear nameplate photo. If the tag’s missing, send the equipment make and model.
SCR bridges, phase cells, DC contactors and braking resistors for Ross Hill and NOV systems.
Browse SCR bay parts
AC and DC control modules, generator sync and power limiting, plus driller’s console boards and throttles.
Browse SCR house controls
VFD boards, gate drivers and cooling fans, along with soft starters, contactors and drive accessories.
Browse drives and motor control
Switchgear, MCC buckets, breakers and transformers, plus PLCs and operator interfaces.
Browse electrical equipment
Send a drawing or sample for enclosures, back panels, brackets and other fabricated parts.
See fabrication capabilitiesInclude full part numbers, quantities and any nameplate photos you have.
Edmundson Industrial. Oilfield Electrical Supply.