Manufacturers
- 3M
- ABB
- Acme Transformer
- Acudor
- Acuity Controls
- Advance Ballast
- Aiphone
- Airpax
- Allen-Bradley
- Amalgamated Electric
- American Dynamics
- Appleton
- Arlington
- Arrow Hart
- ATC-Frost
- Belimo
- Bridgeport
- Brush
- Bussmann
- Carlo Gavazzi
- CEB
- Cefco
- Cendrex
- Commander
- Cooper Wheelock
- Crouse-Hinds
- Cutler Hammer
- Eaton
- Edwards
- EE Controls
- EFI
- Electro-Vox
- English Electric
- Eurobex
- Everbright
- Federal Pioneer
- Ferraz Shawmut
- Fuji
- Furnas
- GE
- GE Fanuc
- Generac
- George Fisher Signet
- Globetron
- Gould Shawmut
- Hammond
- Heinemann
- HILTI
- Hitachi
- Hoffman
- Honeywell
- HP
- Hubbell
- IDEC
- Ilsco
- Instrument Transformers
- ITE
- ITI
- Itron
- Johnson Controls
- Kantech
- Kathrein
- Killark
- Klockner-Moeller
- Kraus & Naimer
- Legrand
- Leviton
- Liebert
- Lightolier
- Lutron
- Magnetek
- MEC
- Merlin Gerin
- Mersen
- Mitsubishi
- Moeller
- Nokia Siemens Networks
- Norgren
- Osram
- Ouellet
- Pass & Seymour
- Penn-Union
- Pepperl & Fuchs
- Philips
- Potter
- Pyrotenax
- R.F. Mote
- Red Lion
- Reloc
- S&C Electric Canada
- Saginaw Controls
- Sangamo
- Schneider
- Sepco
- Siemens
- Simplex
- Socomec
- Sola Canada
- Sprecher Schuh
- Square D
- STI
- Stromberg
- Summa Engineering
- Sylvania
- System Sensor
- Taylor
- TCI
- Tekmar
- Telemecanique
- Thermador
- Thomas Betts
- Total Protection Solutions
- Tyco
- USA Technologies
- Venture
- Vynckier
- Watt Stopper
- Westinghouse
- Williams Brothers
- Yokogawa