DEMA Role San. ve Tic. A. S. has been manufacturing and delivering secondary protection relays and auxiliary systems since its foundation in 1977.

As a result of the advancements in digital protection technology, the production of the first generation (electromechanical type) protection relays was stopped in 2005. The second generation (electronic type) and the third generation (digital type) protection relays are still in production.

DEMA Role San. ve Tic. A. S. is manufacturing and promoting DC auxiliary supply systems, annunciator systems and auxiliary products such as lock-out relays, timers and impulse relays along with protection relays.

Our products are being manufactured and delivered under the guarantee of ISO 9001: 2008 quality assurance system and high-tech manufacturing and quality control infrastructure. Please do not hesitate to contact us for any questions and opinions, your feedback will be much appreciated.