YBX3 series of flameproof three-phase induction motors, seat number: H63~400, capacity: 0.55-560 KW, pole number: 2~10P, voltage: 1140 V and below, anti explosion markings: Exd lIA T4 Gb, Exd IIB T4 Gb, Exd IIC T4 Gb, in square box and circular shapes, for equipment used in explosive gas environments other than coal mines, suitable for use with various mechanical devices with high safety requirements in petroleum, chemical, natural gas, biopharmaceuticals, etc; Efficiency indicators shall conform to Class 3 energy efficiency specified in GB 18613-2020 and Class 3 energy efficiency in IEC 6003430, with qualifications such as explosion proof certificate, production license, energy conservation certificate, etc.