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Standard for Secondary Protectors for Communications Circuit

UL Standard
Standard 497A, Edition 3 Edition Date: March 20, 2001 $402.00-$998.00

Revisions and Related Documents

Revisions
Red Line Std. (8)

Date   
October 17, 2019 Redline Revision
May 30, 2017 Redline Revision
February 10, 2017 Revision
December 13, 2012 Revision
October 01, 2008 Revision
June 14, 2004 Revision
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CSDS
Proposals (4)

CSDS Proposal

CSDS Proposals

An electronic document associated with a UL Standard for Safety or Outline of Investigation, and issued by UL to propose:

  • A revision of a single or multiple requirement(s).
  • A complete new edition of an existing Standard or Outline.
  • A new Standard or Outline that has not previously been published.

CSDS Proposals provide access to view the proposal and submit comments within UL's Collaborative Standards Development System (CSDS) appropriately.

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Summary of Topics (SOT)
July 26, 2019 N/A
December 23, 2016 View
October 19, 2012 View
June 27, 2008 View
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CRD/PAGs (0)

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Other Updates (2)

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Bulletin

Bulletins

These bulletins are not used in CSDS. These are announcement and report type bulletins.

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Summary of Topics (SOT)
December 14, 2007 View
November 08, 2007 View
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Referenced Standards (18)

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