Explosion Proof Motors (Exd / Exde) - High Efficiency - IE2

Typical Applications

The instalation of electric motors where flamable products are continuously handled, processed or storage, must comply with the most demanded safety standards in order to guarantee protection of life, machines and environment. Following to the highest safety standards WEG explosion proof motors integrate the high performance of the brakes. Perfect solution to equipments where fast safety stops are required, as well as precise positioning with safety in hazardous areas such Zone 1 and Zone 2. WEG Exd motors with brake are available in versions: Standard Efficiency (EFF2), Premium Efficiency (EFF1) and Top Premium Efficiency (Exceeds EFF1) and are certified to operate with frequency inverters.

Standard Features

  • Three-phase, multivoltage, IP55, TEFC
  • Output: 0.37 up to 315 kW
  • Frames: 90S up to 355M/L
  • Voltage: 220-240/380-415V (up to 100L) / 380-415/660V (from 112M and up)
  • Class “F” insulation (T=80K)
  • Continuous duty: S1
  • Design N
  • Ambient temperature: 40°C, at 1000 m.a.s.l.
  • Squirrel cage rotor/Aluminium die cast
  • Lip Seal on both endshields
  • Stainless steel nameplate AISI 316
  • Dimensions according to IEC 60072
  • Performance characteristics according to IEC 60034-30
  • Metric threaded cable entries on the terminal box
  • Thermistors (1 per phase) for all frames
  • Suitable for inverter duty applications
  • Color: RAL 5009

*For additional details about Inverter operation, please contact our technical support.

Optional Available

  • Degree of Protection: IP56, IP65 or IP66(W);
  • Bearing seals:
    • Oil seal
    • Labyrinth taconite seal and W3seal for frames 90S and above
  • Thermal protection:
    • Thermistors: frame 132M and below
    • Thermostats
    • RTD-PT 100
  • Space heaters
  • Design H
  • Class “H” insulation
  • Roller bearings for frame 160M and above

More options available, on request


IEC Standard:

Zone 1; Group IIB

CENELEC Standard:

  • Group IIB; Category 2
  • The classification in Zone 1 means that the motor is suitable to operate also in Zone 2 once
  • Zone 1 represents an operating condition worse than Zone 2.
  • The same applies to Groups and Categories: Ex d and Ex de motors are suitable to operate also in Group IIA and Category 3


In Europe, WEG explosion proof motors meet ATEX Directive 94/9/EC certified by PTB and product certified by CESI – Centro Elettrotecnico Sperimentale Italiano S.P.A. The CESI certificates of conformity for explosion proof in flameproof enclosure “d” and “de” as per EN50014 / EN50018 are:

Ex d – Explosion proof motors (class of temperature T4)

Ex de – Explosion proof motors with increased safety terminal box (class of temperature T4)

Frames Certificate number

  • 90-100 CESI 01 ATEX 096
  • 112-132 CESI 01 ATEX 097
  • 160-200 CESI 01 ATEX 098
  • 225-250 CESI 01 ATEX 099
  • 280-315 CESI 01 ATEX 100
  • 355 CESI 01 ATEX 101