- ABB
- Alto
- Ashley
- Basics
- BBC/Stotz-Kontakt
- Bill
- British General
- Castlec
- CED
- CGD
- CHiNT
- Click
- Clipsal
- Contactum
- Cudis CPN
- Crabtree
- CTI
- Cutler Hammer
- Delta
- Deta
- Doepke
- Dorman Smith
- Durham Switchgear
- Eaton
- Europa Componants
- F & G/Moeller
- FAZ
- Federal Electric
- GEC Vynckier
- GE
- GET
- Geweiss
- Geyer
- Hager
- IMO/ETI
- Klockner Moeller
- Kupp/Ottermill
- Lawson Fuses
- Legrand
- Lewden
- Lupus
- M2
- Magnuss
- Marbo
- MCG
- MEM
- Merlin Gerin
- Mitsubishi
- MK Electric
- Moeller
- Newlec
- Niglon
- Ottermill
- Protek
- Proteus
- RTC
- Schneider
- Schupa
- Sector
- Siemens
- Simplex
- Square D
- Steeple
- Telemecanique
- Tenby
- Terasaki
- TMA
- Vistalux
- Volex
- Vynckier
- Wylex
