A dry chemical fire suppression system is a type of fire protection system that makes use of a dry chemical powder to extinguish a fire. Most dry chemical fire suppression systems make use of a large tank that is filled with the dry chemical powder, and then pressurized.

When the system is activated, either electrically or manually, the valve on the pressurized tank opens, and the dry powder is released into a piping system and out the nozzles of the fire suppression system. The dry chemical powder works to smother and extinguish the fire as soon as possible.