E-T-A Engineering Technology (also known as E-T-A Circuit Breakers, Oakland Industries) is a company that manufactures circuit breakers. It produces breakers for thermal, thermal-magnetic, magnetic, electronic, and high-performance equipment. The company offers circuit protection devices, relays, solid-state remote power controllers, power management systems, intelligent power distribution systems, and battery isolation switches. E-T-A Engineering Technology serves industrial original equipment manufacturers and end-users.