Schweitzer Engineering Laboratories
Schweitzer Engineering Laboratories

Solutions, Systems, Services, and products for the Protection, Monitoring, Control, Automation, and Metering of Utility and Industrial Electric Power Systems.

LINAM(R), AutoRANGER(TM), and RadioRANGER(TM) fault indicators, and PILC sensors.

Doble Family

Doble family of products including:

  • Protective Relay and circuit breaker test equipment.
  • Online monitoring products for transformers and bushings.
  • RTS and Powerbase software solutions.
  • Morgan Schaffer Dissolved Gas Analysis (DGA) products and services
Morgan Schaffer
Manta Test Systems
Vanguard Instruments Company, Inc.
G & W

Overhead and underground distribution switches, Lazer® Automation solutions, reclosers, distribution and transmission cable accessories, and current limiting system protection devices.

VFP Equipment Shelters & Modular Structures
VFP Equipment

Engineered Control Houses and Shelters

HICO Hyosung Corporation
Hico America

Large Power Transformers and Circuit Breakers.

Mega Power Systems
Mega Power Systems

Universal Test Switches, FT-1 Replacements


CVT’s, CT’s, reactors, line traps, and instrument transformers.

Elgin Power Solutions Logo

Unitized substations, mobile substations, and a full line of other skid-mounted or wheel-mounted equipment. Enclosed capacitor banks and harmonic filter banks, specialty transformers, reactors, custom switchgear.


UPS uninterruptible power supply for computer and peripheral, data center, network and server.

Newell-PSN, LLC

High Voltage porcelain, glass and composite insulators.

Royal Switchgear
Royal Switchgear

Substation group-operated disconnect switches, substation and distribution hookstick disconnects, and substation connectors.