Browse & Buy UL Standards
Standard 497B, Edition 4

Standard for Protectors for Data Communications and Fire-Alarm Circuits

UL CSDS Proposal
Standard 497B, Edition 4 Edition Date: December 23, 2016
Summary of Topics b0497b_4_20161223_sum.html

Subject 497B

Bulletin Dated: December 23, 2016

SUMMARY OF TOPICS

The following is being proposed:

1. Reaffirmation and Continuance of the Fourth Edition of the Standard for Protectors for Data Communications and Fire Alarm Circuits, UL 497B, as an American National Standard

Back to Standard 497B, Edition 4

The cost to purchase this Standard varies depending on whether you are ordering a hardcopy, PDF or combination of the two. We also offer two different types of subscriptions: a one year and a three year.

You will be able to choose your purchase options on the following pages.

×
×
×
×
×

You have one or more subscriptions that will expire soon.

×

You have one or more licenses to assign

×