UL UL1558 ⑧ Underwriters Laboratories Inc . Standard for Safety Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear july9,2009-UL1558 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear ,UL 1558 Fourth Edition ,Dated February 25 ,1999 Revisions :This Standard contains revisions through and including July 9 ,2009 SUMMARY OF TOPICS This revision to UL 1558 includes the following changes in requirements : Location of Operating Handles Update References Correct Text in Table 7.1 Clarify Requirement for Wire Bending Space with Angled Lugs Miscellaneous Editorial Revisions Text that has been changed in any manner is marked with a vertical line in the margin .Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement bees effective The following table lists the future effective dates with the corresponding reference . Future Effective Dates January 9 ,2013 Paragraphs 2.1,4.1,5.1,6.1.1,7.1,8.1.1,10.1,11.1, 12.1.1...
UL 1558-2009 Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear.pdf
