Publisher : UL

UL Subject 497B PDF

Standard for Protectors for Data Communications and Fire-Alarm Circuits (CSDS Proposal, 10/26/2012)

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UL Subject 497B PDF

Standard for Protectors for Data Communications and Fire-Alarm Circuits (CSDS Proposal, 12/23/2016)

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UL Subject 497B PDF

Standard for Protectors for Data Communications and Fire-Alarm Circuits (Bulletin, 11/1/2007)

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UL Subject 497B PDF

Standard for Protectors for Data Communications and Fire-Alarm Circuits (Bulletin, 12/14/2007)

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UL Subject 497C PDF

Standard for Protectors for Coaxial Communications Circuits (CSDS Proposal, 6/27/2008)

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UL Subject 497C PDF

Standard for Protectors for Coaxial Communications Circuits (CSDS Proposal, 10/26/2012)

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UL Subject 497C PDF

Standard for Protectors for Coaxial Communications Circuits (CSDS Proposal, 12/23/2016)

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UL Subject 497C PDF

Standard for Protectors for Coaxial Communications Circuits (Bulletin, 12/14/2007)

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UL Subject 497D PDF

Outline of Investigation for Component Secondary Protectors for Communications Circuits Used with Specified Voltage Supression (Outline, 11/1/2007)

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UL Subject 497D PDF

Component Secondary Protectors for Communications Circuits Used with Specified Voltage Suppression (Bulletin, 11/1/2007)

Document status: Active