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Standard 497A, Edition 3

Standard for Secondary Protectors for Communications Circuits

UL Bulletin
Standard 497A, Edition 3 Edition Date: November 08, 2007 $203.00-$254.00
Summary of Topics m0497d_1_20071108_sum.html

Subject 497D (497A)

Bulletin Dated: November 8, 2007

Summary of Topics

This bulletin announces the availability of the Outline of Investigation for Component Secondary Protectors for Communications Circuits Used with Specified Voltage Suppression.

Back to Standard 497A, Edition 3

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