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Electric Motors 1MJ7

1MJ7 Electric MotorExplosion-proof, three-phase, low-voltage asynchronous squirrel-cage motors of gray iron.

Explosion-proof, three-phase asynchronous squirrel-cage motors, the 1MJ7 production line, are designed for applications in areas with the possible occurrence of an explosive atmosphere created by gases, vapors or mist (zone 1).

Explosion-proof manufacturing

  • For axial size 225S to 315M: EEx de II CT4
  • For axial size 315L: EEx de II B+H2 T4

Technical data

Parameter 1MJ7 Electric Motor
Size: 225S – 315L
Output range: 18,5 – 200 kW
Number of poles: 2, 4, 6, 8
Rated voltage: 400VD / 690VY, 50Hz // 460VD, 60Hz
Frequency: 50 / 60 Hz
Coverage: IP 55
Shape: IM B3, IM B5, IM B35
Frame: Gray Iron


  • Ambient temperature: -20°C do +40°C
  • Insulation: class F
  • Altitude: up to 1000 m
  • Permanent load: S1
  • Standard paint: RAL 7030


  • Motors meet the standards of explosion-proof equipment according to ČSN EN 50014, ČSN EN 50018
  • ATEX explosion-proof certificate

Should you have any queries, feel free to contact us.