The YFB4 series high-efficiency dust explosion-proof three-phase asynchronous motor (frame numbers 80-355) is made into an explosion-proof type according to the provisions of GB/T 3836.31-2021 "Equipment Protected by Dust Ignition-proof Enclosures". The explosion-proof mark is Ex tb IIIC T130 ° C Db, and it is a fully enclosed self fan cold cage three-phase asynchronous motor. Its efficiency index meets the second level specified in GB 18613-2020 "Limits and Grades for Energy Efficiency of Electric Motors", and has the advantages of high efficiency, low noise, low vibration, excellent performance, and safe and reliable use. Mainly used in industries such as medicine, textiles (such as cotton fiber, linen fiber, chemical fiber, etc.), metallurgy (such as magnesium powder, aluminum powder, carbon powder, etc.), grain processing (such as wheat, corn, grains, etc.), feed processing (blood powder, fish meal), fertilizers, tobacco, papermaking, etc.