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Standard 1951, Edition 2

Standard for Electrical Plumbing Accessories

UL Red Line
Standard 1951, Edition 2 Edition Date: February 27, 2017
Summary of Topics s1951_2_sum.html

SUMMARY OF TOPICS

These revisions to ANSI/UL 1951 include the following changes in requirements:

•Update requirements for capacitors

•Update requirements for Switch-Mode Power Supplies

•Update requirements for switches

•Allow the use of UL 840 to evaluate clearance and creepage distances

•Add specifications for Safety Critical Functions

•Revise requirements for electronic circuits

Back to Standard 1951, Edition 2

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