Based on more than 40 years of experience in the field of railway electrical networks, our DFF9000 protection relay protects your fixed electrical traction installations on a DC network, by monitoring the quality of the currents and voltages supplied.

Our DFF9000 protection relay monitors the presence of AC current and voltage on your direct current network thanks to its overcurrent or harmonic voltage functions.

Its highly accurate processing from 5 Hz, its scalable platform, its embedded web server and its touch screen HMI, allow you to calmly approach the future of your railway infrastructures.