Standards & Publications

Browse & Buy UL Standards
Standard 6420, Edition 1

Equipment Used for System Isolation and Rated as a Single Unit

UL Bulletin
Standard 6420, Edition 1 Edition Date: June 20, 2008 $250.00-$314.00
Summary of Topics b6420_1_20080620_sum.html

Subject 6420

Bulletin Dated: June 20, 2008

SUMMARY OF TOPICS

The following topics were discussed at the meeting:

1. The reorganization of STP 508 into 4 new STPs and the scope of the new STP 6420

2. System Isolation Equipment

3. The proposed Standard for Equipment Used for System Isolation and Rated as a Single Unit, UL 6420

Back to Standard 6420, Edition 1

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
×