What is the traditional symbol for a Class D fire extinguisher?

What is the traditional symbol for a Class D fire extinguisher?

• A. Yellow Star
• B. Green Triangle
• C. Blue Circle
• D. Red Square

Answer: (A)

Understanding extinguisher labeling helps you pick the right tool fast. The symbol a yellow star represents Class D, fires involving combustible metals such as magnesium, titanium, sodium, or potassium. These fires require a specialized dry powder designed for metal fires, which coats and cools the metal to prevent continued burning; using water or standard extinguishing agents can cause violent reactions, making the situation worse. That’s why the yellow star is the correct symbol. Other shapes like a green triangle, blue circle, or red square point to different fire classes in other labeling systems, so they don’t indicate metal fires.