Expert solutions
for the energy of tomorrow

Since 1977, we have been producing high-quality, user-friendly, and innovative secondary protection solutions in accordance with international standards.

45.th Anniversary
of the Establisment of Dema

Dema Relay Inc. continues to produce future-oriented projects related to digital communication protection and measuring devices in its 45th year.

About US

Dema has been manufacturing and delivering secondary protection systems and supplementary products since 1977; has become one of the pioneer companies in the fields of protection knowledge base, product quality and customer support.

We have always paid special attention to manufacture standard compliant products through our history, while providing user-friendly and innovative solutions. Dema is running all of the product realization processes within its body, including the R&D; prototyping, molding and mass production phases.

  • ISO 9001:2015 Quality Management System Certificate

  • ISO 14001:2015 Environmental Management System Certificate

  • ISO 45001:2018 Occupational Health and Safety Management System Certificate

Function Test Feauture
Protection Relays have a "Function Test" feature that can tests themselves without the need for a Relay Tester.
Function Test Feauture
Displaying Protection Functions On Main Screen
Desired ones from a large number of current, voltage, frequency protection functions can be set and displayed on the active functions page.
Displaying Protection Functions On Main Screen
Displaying Measurement Values On Large Graphic Screen
Currents, voltages, meas. of current sequences are displayed on a single screen and easily viewed by users in 1.5 m long distance.
News and Events
Domestic Product Certificate was obtained
19.08.2022
Domestic Product Certificate was obtained
"Domestic Product" certificate was obtained for the CPM and DPM relays developed locally and nationally.Our efforts to strengthen industry have been registered with overcurrent and feeder relays, which have been awarded the Domes...
We continue to support renewable energy systems.
03.08.2022
We continue to support renewable energy systems.
DPM 400 D Feeder Protection Relay with IEC61850, IEC60870-5-104, IEC60870-5-103 Modbus communication; was used and successfully commissioned in the Concrete Kiosk project in Kahramankazan Aerospace, also in Aviation OSB , Vangölü...
Dema Celebrates 45 Years of Manufacturing and Business
03.08.2022
Dema Celebrates 45 Years of Manufacturing and Business
Dema is pleased to celebrate 45 years of businessThe 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.De...
We commemorate our Founder Prof. Dr. Ali Mansuri with respect.
21.06.2022
We commemorate our Founder Prof. Dr. Ali Mansuri with respect.
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. We commemorate our Founder Prof. Dr. Ali Mansuri w...
We have renewed our ISO Certifications
21.06.2022
We have renewed our ISO Certifications
This year at Dema we have had the audit for the renewal and transition to the new version of the ISO 9001 certificate.Dema´s quality management system is applicable to the manufacture of all parts of relays.The implementation and...
We have received TEYDEB Funds and Grants
21.06.2022
We have received TEYDEB Funds and Grants
Our project has been accepted within the scope of TÜBİTAK TEYDEB 1501-Industry R&D support program.