About
Dry Powder Fire Extinguishers
Dry powder fire extinguishers are also called ABC fire extinguishers, because - you guessed it - they are suitable for Class A (flammable solids), B (flammable liquids), and C fires. Class C covers flammable gases like butane, methane, and hydrogen.
The standard versions of these extinguishers are even suitable for electrical fires involving equipment up to 1000v. You can also buy a specialist dry powder fire extinguisher for fires caused by flammable metals.
Dry powder quickly smothers the fire and its source, forming a barrier between the fuel and the oxygen source and absorbing heat from the flames. These extinguishers shouldn’t be used in enclosed spaces where people could inhale the powder.