Circuit Breakers- Airpax, CBI / Hy-Mag, E-T-A, Eaton/Heinemann, Carlingswitch, Schurter, Potter & Brumfield
Enclosures- Hammond Manufactring, OKW Products, Rolec Manufacturing
Panel Seals- APM Hexseal
Thermostats- Airpax
Transformers- Hammond Manufacturing