CircuitBreakerPartsOnline - Online source for purchasing repair/replacement parts for low voltage power circuit breakers.

Poco Sales - Source of small breakers for equipment. Featuring breaker manufacturers such as AirPax, CBI / Hy-Mag, E-T-A, Eaton / Heinemann, Carling Switch, Schurter, Potter & Brumfield

Professional Electrical Apparatus Recyclers League - PEARL

InterNational Electrical Testing Association - NETA