YBX4 series high-efficiency flameproof three-phase asynchronous motors (frame numbers H80~355) are made of flameproof type according to the requirements of B/T3836.1-2021 "Explosive Atmospheres - Part 1: General Requirements for Equipment" and GB/T 3836.2-2021 "Explosive Atmospheres - Part 2: Equipment Protected by Flameproof Enclosures" d ". The explosion-proof signs are Ex db IIB T4 Gb and Ex db IIC T4 Gb.

The efficiency indicators of this series of motors meet the second level specified in GB 18613-2020 "Energy Efficiency Limits and Grades for Electric Motors". It has the advantages of high efficiency and energy conservation, large temperature rise margin, small size, light weight, beautiful appearance, reliable operation, good performance, low noise, small vibration, and convenient use and maintenance. It is widely used in coal mines, oil and gas, petrochemical and chemical industries. In addition, it is widely used in sectors such as textiles, metallurgy, urban gas, transportation, grain and oil processing, papermaking, pharmaceuticals, etc.