Eaton Transformer Relay (ETR 4000 / 5000)

Eaton’s ETR relay has been designed for maximum user flexibility and simplicity. Multiple current inputs provide primary protection, control and back-up protection of transformers, including current differential, restricted ground differential, and overcurrent protection. The ETR has mass memory for data storage, eight programmable binary inputs, and it can be powered from 19-300 Vdc or 40-250 Vac.