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Standard 1558, Edition 5

Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear

UL CSDS Proposal
Standard 1558, Edition 5 Edition Date: August 25, 2016
Summary of Topics b1558_5_20160825_sum.html

Subject 1558

Bulletin Dated: August 25, 2016


The following changes in requirements to the Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear, UL 1558, are being proposed for preliminary review and comment only:

1. For Preliminary Review Only: Increasing Voltage Ratings of Products Covered by UL 1558 to Include 1000 V

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