Class III in explosion-proof certification refers to places with combustible dust. Combustible dust can be divided into conductive dust IIIC, non-conductive dust IIIB, and combustible fly ash IIIA according to their conductive characteristics. Common combustible dust fields include metal polishing, spraying, grain and oil, plastic, feed, etc.
Dust type explosion-proof certification usually adopts explosion-proof types such as intrinsic safety type, sealed type, positive pressure type, and anti dust ignition shell type based on the structure, electrical parameters, installation method, etc. of the product.
