A device that ensures the safety of life and property by eliminating the excess energy generated during sudden voltage spikes, preventing the circuits of the installation to which it is connected and the electronic and electrical devices connected to that installation from burning and eliminating the risk of fire that may occur due to this, technically capable of controlling the voltage between phase-phase, phase-neutral, phase-earth, eliminating excesses with a precision of 10 nanoseconds without de-energizing and transmitting them to earth, preventing atmospheric discharge (lightning) between phase-earth, and excesses that may come from earth in a similar situation, is a surge suppressor that can prevent heating and arcing with its special chemical substance and can be mounted on the rail without damaging the panel and other materials in the panel and without the need to leave a safety distance to the panel and can be used together with other materials such as residual current protection switches, etc. surge suppressor that prevents voltages over 275 Volts in single-phase circuits and over 420 Volts in three-phase circuits in accordance with national and international standards.