ANSI/ISA 61241-18 (12.10.07)-2006 (R2011)

This standard is applicable to electrical apparatus protected by encapsulation type of protection mD and surface temperature limitation for use in areas where combustible dust may be present in quantities which could lead to a fire or explosion hazard. It specifies requirements for design, construction and testing of electrical apparatus, parts of electrical apparatus and Ex components where the rated voltage does not exceed 10 kV.

This product referenced by:NFPA (Fire) 70 - Electrical Apparatus for Use in Zone 20, Zone 21, Zone 22 Hazardous (Classified) Locations - Protection by Encapsulation mD Downloadable.