Welcome to Dema Relay
DEMA has been manufacturing and delivering secondary protection systems and supplementary products since 1977. The fundamentals of our company were first built through efforts of the company founder Mr. Ali MANSOURI in 1974, to develop the first national electromechanical protection relay.
DEMA Relay Industry and Trade Joint Stock Company was found in Istanbul, Turkey in 1977. From the foundation up to now, DEMA has been manufacturing and delivering secondary protection systems and supplementary products. The company has become one of the pioneer companies in the fields of protection knowledge base, product quality and customer support.