W21 series Ex nA non-sparking motors Standard technical data：
Protection level: IP55
Insulation class: Class F
Continuous duty: S1
Ambient temperature: 40°C, below 1000 meters above sea level
Remarks: WEG spark-proof motors are suitable for operation in Zone 2 and can also be operated in Zone 22
WEG's spark-proof motors comply with ATEX-guided 94/4EC standards and are certified by PTB and BASEEFA