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YFB4 series dust explosion-proof three-phase asynchronous motor is a fully enclosed self-fan-cooled squirrel-cage three-phase asynchronous motor. It has the characteristics of small size, light weight, reliable operation, beautiful appearance, etc. It also has high efficiency, low noise, small vibration and low temperature rise. Large, excellent performance, advanced and reasonable explosion-proof structure, safe and reliable use, etc.
Dust explosion-proof ac motors are mainly suitable for places where combustible dust exists in medicine, textiles, metallurgy, grain processing, feed processing, chemical fertilizers, tobacco, paper making, synthetic materials, building materials, etc.
| Frame size | H80-H355mm |
| Power | 0.37-375kW |
| Frequency | 50Hz/60Hz |
| Voltage | 380V/660V/1140V |
| Speed | 3000rpm/1500rpm/1000rpm/750rpm/600rpm |
| Protection Grade | IP55/IP56/IP65 |
| Cooling Method | IC411 |
| Insulation | F/H |
| Service | S1 |
| Ambient temperature | -15 °C to + 40 °C |
| Altitude | standard altitude≤1000m |
| Bearing | Chinese/SKF/FAG/NSK available |
| Mounting | IMB3/B5/V1/B35 |
| Explosion proof class | Ex tD A21 IP65 T130℃/Ex tD A22 IP65 T130℃ |
The YFB4 series motor is a fully enclosed self-fan-cooled squirrel-cage three-phase asynchronous motor. Key features include its compact size, light weight, reliable operation, high efficiency (IE4 level), low noise, low vibration, and advanced explosion-proof design.
They are ideal for industries where combustible dust is present, including medicine, textiles, metallurgy, grain and feed processing, chemical fertilizers, tobacco, papermaking, synthetic materials, and building materials.
The power capacity ranges from 0.37kW to 375kW, with available operational speeds of 3000rpm, 1500rpm, 1000rpm, 750rpm, and 600rpm.
This classification represents dust explosion-proof protection (Ex tD), Type A equipment (A), suitable for Zone 21 (21), with an IP65 protection grade rating and a maximum surface temperature group limit of 130℃.
The motor operates efficiently in ambient temperatures ranging from -15 °C to +40 °C and is designed for standard altitudes up to 1000 meters.
These motors offer IP55, IP56, or IP65 protection grades and utilize the IC411 cooling method with Class F or H insulation standards.
