UL-497 › Standard for Protectors for Paired-Conductor Communications Circuits
Included in this current edition are the following subparts:
7TH EDITION - April 25, 2001
CHANGE 06/04 - June 14, 2004
CHANGE 04/09 - April 9, 2009
CHANGE 07/13 - July 19, 2013
CHANGE 10/17 - Oct. 6, 2017
CHANGE 07/22 - July 25, 2022
CHANGE 06/04 - June 14, 2004
CHANGE 04/09 - April 9, 2009
CHANGE 07/13 - July 19, 2013
CHANGE 10/17 - Oct. 6, 2017
CHANGE 07/22 - July 25, 2022
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Document Number
UL-497
Revision Level
7TH EDITION
Status
Current
Publication Date
April 25, 2001
Page Count
60 pages