Standard 497, Edition 7
UL 497

Standard for Protectors for Paired-Conductor Communications Circuits

UL CSDS Proposal Edition 7 Published Date: August 11, 2017 Last Revision: July 25, 2022

Summary of Topics b0497_7_20170811_sum.html

Subject 497

Bulletin Dated: August 11, 2017

SUMMARY OF TOPICS

The following is being proposed:

1. Reaffirmation and Continuance of the Seventh Edition of the Standard for Protectors for Paired-Conductor Communications Circuits, UL 497, as an American National Standard

Back to Standard 497, Edition 7

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

×

Additional information required

To serve you better, please update your account details.

Featured Standards


Recently Published











Coming Soon

UL 48
Electrical Signs
Revision Pages

UL/ULC 25
Meters for Flammable and Combustible Liquids and LP-Gas
Revision Pages

UL 155
Tests for Fire Resistance of Vault and File Room Doors
Revision Pages

UL 310
Electrical Quick-Connect Terminals
New Edition

UL 19
Lined Fire Hose and Hose Assemblies
Revision Pages

UL 104
Elevator Door Locking Devices and Door or Gate Closed Detection Means
New Edition

UL 217
Smoke Alarms
Revision Pages

UL 294
Access Control System Units
Revision Pages
×

Email Verification Required

To enhance security and protect our community from fraudulent activity, we require email address confirmation before orders can be placed. This step ensures that all orders come from verified sources, helping us maintain a safe and trusted environment for everyone. Thank you for your cooperation.

To resend the confirmation email please click here. The confirmation email will look like the sample below.

Sample

example email
×