Maximum Safety with High Efficiency
In hazardous environments, such as in chemical plants, the oil industry or in gas works, motors have to comply with the strictest safety standards for the protection of life, machines and the environment. With the explosion-protected motors from MEZ you are going further than the basic safety requirements: our rugged EEx motors operate completely reliably even under the most extreme conditions - and this has been proven worldwide a hundred thousand times over. And what is more, there are no gaps in our EEx motor range, they meet all requirements with maximum safety and high efficiency during operation
Explosion-protected Motors - Technical Overview
Motors Type of protection "e" Type of protection "d" Type of protection "n" Dust explosion-proof
Frame Size 63M to 315L 71M to 450 63M to 450 56M to 450
Output range 0.12 kW to 165 kW 0.25 kW to 950 kW 0.09 kW to 1000 kW 0.06 kW to 1000 kW
Number of Poles 2/4/6 2/4/6/8 2/4/6/8 2/4/6/8
Temperature Class T1 - T3 T1 - T4 T3 -
Type of Protection II 2 G EEx e II acc. to IEC/EN 60079-0, IEC/EN 60079-7 II 2 G EEx e II acc. to IEC/EN 60079-0, IEC/EN 60079-7 Ex nA II 3G EEx nA acc. to IEC/EN 60079-15 one 21: II 2D IP 65 T 125 °C Zone 22: II 3D IP 55 T 125 °C acc. to EN 50281/ IEC 61241
Guideline 94/9/EG, ATEX 95
Degree of Protection IP 55 IP 55 IP 55 Zone 21: IP 65 Zone 22: IP 55
Voltages All commonly used voltages
Frequency 50 Hz and 60 Hz
Construction Type All common construction types
Housing FS 63M ... 160L aluminium FS 100L ... 315L cast iron Cast iron FS 63M ... 160L aluminium FS 100L ... 450 cast iron FS 56M ... 225M aluminium FS 100L ... 450 cast iron (Zone 21 only up to FS 315L)
Cooling Type Surface air cooling
Temperature Class F used as B
Isolation Type DURIGNIT® IR 2000 DURIGNIT® IR 2000, inverter-compatible up to 500 V, 690 V on request
Type Spectrum Quality Tested
  • "Increased safety" degree of protection - "e" (EEx e II)
  • Explosion-proof enclosure - "d" (EEx de IIC)
  • Non sparking - "n" (EEx nA, Ex nA)
  • Dust explosion-proof
All explosion-protected motors from MEZ have been tested by the German Federal Institute of Science and Technology (PTB) or by the German Coal and Steel Technology Co. (DMT).