Historical
UL 913 Ed. 5-1997
Standard for Intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II, III, Division 1, Hazardous (Classified) Locations - Published Date: February 21, 1997
The requirements were originally published as the Fourth edition of this UL Standard. This edition also contains pages dated February 24, 1997 that were originally issued as revision pages to the fourth edition. These pages are not part of the ANSI approved text.
Underwriters Laboratories [ul]