UL 497 BULLETIN-2007
UL Standard for Safety Protectors for Paired Conductor Communications Circuits

Standard No.

UL 497 BULLETIN-2007

Release Date

2007

Published By

Underwriters Laboratories (UL)

Status

Be replaced 2008-06

Replace By

UL 497 BULLETIN-2008

Latest

UL 497 BULLETIN-2017

Scope

Covers protectors for paired-conductor communications circuits intended to protect equipment, wiring, and personnel against the effects of excessive potentials and currents in telephone lines caused by lightning, contacts with power conductors, power induction, and rises in ground potential.

UL 497 BULLETIN-2007 history

• 2017 UL 497 BULLETIN-2017 UL Standard for Safety Protectors for Paired Conductor Communications Circuits (COMMENTS DUE: September 25@ 2017)
• 1970 UL 497-2017 Protectors for paired conductor communication circuits
• 2013 UL 497 BULLETIN-2013 UL Standard for Safety Protectors for Paired Conductor Communications Circuits (COMMENTS DUE: July 01@ 2013)
• 2009 UL 497 BULLETIN-2009 UL Standard for Safety Protectors for Paired Conductor Communications Circuits (COMMENTS DUE: March 16@ 2009)
• 2008 UL 497 BULLETIN-2008 UL Standard for Safety Protectors for Paired Conductor Communications Circuits (COMMENTS DUE: August 11@ 2008)
• 2007 UL 497 BULLETIN-2007 UL Standard for Safety Protectors for Paired Conductor Communications Circuits
• 2001 UL 497-2001 UL Standard for Safety Protectors for Paired Conductor Communications Circuits (Seventh Edition; Reprint with Revisions Through and Including June 14@ 2004)
• 1995 UL 497-1995 UL Standard for Safety Protectors for Paired Conductor Communications Circuits (Seventh Edition; Reprint with Revisions Through and Including May 21@ 2001)
• 1991 UL 497-1991 Protectors for paired conductor communication circuits