Hazardous Locations Rating

Terminology for Hazardous Location Classification

Class III is for fibers and flyings and is exceeded by both Class I and Class II. 

Terminology for Hazardous Location Classification

Based on auto-ignition temperature and seal permeability. Lower groups have lower ignition temperatures (i.e. A is lower than D)

NEMA Ratings
Enclosure Protection IP (European) Ratings
Approximate US Enclosure Type to IP Ratings

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