The E-HRD suppressor is designed for installation on all types of vessels, ducts and pipes for dusts, gases and hybrid mixtures. The suppressor valve is closed with a domed disc and sealing ring and then pressurized with nitrogen. Beneath the domed disc are the actuation devices, comprising a detonator and line-cutting charge. Within approximately 1.5 milliseconds the line-cutting charge cuts a grooved hole approximately 300 degrees around the domed disc. Once the domed disc is cut, the nitrogen presses the disc down and the entire cross section is made available for the suppressant powder to flow out. Through a special nozzle system, optimal deployment of the suppressant powder is achieved.