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YFB3 series dust explosion-proof three-phase asynchronous motor

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Quick Details:

  • Product name:Three-phase asynchronous Motor
  • Product Type: Dust explosion-proof
  • Frame size:80~355
  • Material: Insulating materials and processes that are resistant to high-frequency impulse voltage shocks
  • Rate Power:0.18-375kw
  • Poles:2P,4P,6P,8P,10P
  • Duty:S1
  • Insulation class:F
  • Energy Efficiency Level: China GB18613-2020 Level 3 (IE3 Efficiency)
  • Degree of protection:IP55,IP65
  • Explosion proof mark is ExtD A21 IP65 T130℃, ExtD A22 IP55 T130℃, ExtD B21 IP65 T130℃, ExtD B22 IP55 T130℃
  • Certification:CCC, CE,Explosion proof certificate
  • Supply Ability:15000Sets per Month
  • Warranty:1 year
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General description

  • YFB3 series dust explosion-proof three-phase asynchronous motors (hereinafter referred to as motors) are squirrel-cage three-phase asynchronous motors. .5-2013 “Electrical Equipment for Combustible Dust Environment Part 5: Enclosure Protection tD”.
  • The electrical performance of the motor meets the requirements of Q/320205BABD21-2014 “Technical Conditions for YFB3 Series Dust Explosion-proof Three-phase Asynchronous Motors (Frame No. 63-355)”.
  • There are two types of enclosure protection grades: the dust-proof type is IP55, and the dust-tight type is IP65.
  • Explosion proof mark is ExtD A21 IP65 T130℃, ExtD A22 IP55 T130℃, ExtD B21 IP65 T130℃, ExtD B22 IP55 T130℃

Basic Features

  • Frame number: 80~355.
  • Rated power range: 0.55~315kW
  • Number of poles: 2 to 16 poles
  • Rated voltage: 380, 660, 380/660V. (Note: Basic series voltage 380V, 3kW and below is Y connection, voltage 380V, 3kW and above is △ connection; it can also be manufactured according to special voltage)
  • Rated frequency: 50Hz
  • Thermal Classification: Class 155(F)
  • Efficiency: Level 2 Energy Efficiency / Level 3 Energy Efficiency
  • Cooling method: IC411
  • Installation method: IMB3 (other installation methods can also be manufactured).
  • Protection class: IP65, IP55
  • Operation mode: S1
  • Ambient conditions: Ambient air temperature: -15~+40℃.
  • Altitude: no more than 1000m. (Special ambient air temperature and altitude need to be agreed by both parties, please put forward when ordering.)
  • Use environment: indoor (standard configuration). Optional: outdoor (W), outdoor moderate corrosion protection (WF1), outdoor strong corrosion protection (WF2), indoor moderate corrosion protection (F1), indoor strong corrosion protection (F2), wet tropical zone (TH), dry Tropical (TA), Outdoor Wet Tropical (THW), Outdoor Dry Tropical (TAW)
  • Main junction box: The main junction box is located at the top of the motor (viewed from the shaft extension end of the motor), and the wire outlet can be adjusted in four directions. On the installation site, after hoisting the motor in place, remove the lifting ring, open the cover of the junction box, loosen the connecting bolts between the junction box and the base, and adjust the outlet of the junction box to the rear.

Model description

For example,YFB3-355M1-4W

  • “Y” is three-phase asynchronous motor
  • “FB” is dust explosion-proof type
  • “3” is design series No.
  • “355” is frame size
  • “M” is base length code
  • “1” is No. 1 iron core length
  • “4” is poles number
  • “W” is special environment code (outdoor type)


In the industrial production process, many solid combustible dusts are often produced. In addition to coal (coal, activated carbon), there are metal processing (aluminum, magnesium, titanium, etc.), agricultural and sideline products processing (flour, cocoa, cotton dust, flax, fiber), chemical raw materials, synthetic materials (plastics, resins, fuels, etc.), chemicals (sodium acetate, aspirin, zinc stearate, etc.), these industries and sectors require dust explosion-proof motors for electric drag.

B3(Horizontal foot mounted only)

B35(Footless and flange mounted)

B35(Foot and flange mounted)

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