Standards & Publications

Browse & Buy UL Standards
Standard 508B, Edition 2

UL LLC Outline of Investigation for Relays Used in Information Technology Equipment

UL Outline © 2017 UL LLC
508B, Edition 2 Edition Date: November 15, 2006 $225.00-$250.00
Summary of Topics o0508b_2_sum.html

Summary of Topics

This new issue of SU 508B is being issued through UL’s electronic publishing system to ensure format uniformity between the PDF and HTML versions of the document. No substantive changes have been incorporated in the document.

Revisions and Related Documents

Revisions
Red Line Std. (0)

Showing 10 of XX
Show All None available.

CSDS
Proposals (0)

Showing 10 of XX
Show All None available.

UL LLC CRD (0)

Showing 10 of XX
Show All None available.
Showing 10 of XX
Show All

Other Updates (0)

Showing 10 of XX
Show All None available.
Showing 10 of XX
Show All
Showing 10 of XX
Show All
Showing 10 of XX
Show All
Showing 10 of XX
Show All
Showing 10 of XX
Show All

Referenced Standards (3)

Below is a list of UL Standards referenced in UL 508B

Showing 10 of XX
Show All

Reverse Referenced Standards (1)

UL 508B is referenced in the following list of UL Standards

Showing 10 of XX
Show All

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 101
Leakage Current for Utilization Equipment
Revision Pages

UL 260
Dry Pipe and Deluge Valves for Fire-Protection Service
Revision Pages

UL 310
Electrical Quick-Connect Terminals
Revision Pages

UL 343
Pumps for Oil-Burning Appliances
Revision Pages

UL 498
Attachment Plugs and Receptacles
Revision Pages

ULC 704.1
Thermal Insulation, Polyurethane and Polyisocyanurate, Boards, Faced
Revision Pages

UL 726
Oil-Fired Boiler Assemblies
Revision Pages

UL 746A
Polymeric Materials - Short Term Property Evaluations
Revision Pages
×