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 SEM/Siemens 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

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	Totally Enclosed Fan Cooling
Temperature Class	F
Temperature Rise	B