IEC Aand ANSI Equipment
ABB (Asea Brown Boveri
American Circuit Breakers
Arrow Hart
Brown Boveri
Challenger (Clark)
Cutler-Hammer
Federal Pacific Circuit Breakers
Furnas
Gemco
General Electric ( GE )
Gleason
Hubbel Industrial Control ( Euclid )
ITE / Gould
Joslyn Clark
Moeller ( Klockner Moeller )
Magnetek
Murray
Ohio Magnetics
Patriot
Siemens/ITE
Square D
Stored Energy Systems
Telemechanique
Wagner
Ward Leonard
Westinghouse