UL 489
Standard for Safety Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures
Published by UL Standards & Engagement (UL)
The CFR incorporates UL 489 by reference, which makes the edition it names part of the regulation. The CFR requires the edition it names, which may not be the newest. To enforce any other edition, the agency must publish the change in the Federal Register.
The 2 editions the CFR requires
Different parts name different editions; each applies where its part says so. Newest first.
UL 489, Thirteenth Edition, October 24, 2016
As the CFR lists it: “UL 489, Standard for Safety Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures, Thirteenth Edition, October 24, 2016 (“ANSI/UL 489”)”
UL 489-1995
As the CFR lists it: “UL 489-1995, Molded-Case Circuit Breakers and Circuit Breaker Enclosures”
- Listed in 46 CFR 114.600(i)(4); required by46 CFR 120.380 ↗
- Listed in 46 CFR 125.180(j)(4); required by46 CFR 129.380 ↗
- Listed in 46 CFR 175.600(m)(5); required by46 CFR 183.380 ↗
Listed as: “UL 489-1995, Molded-Case Circuit Breakers and Circuit Breaker Enclosures (“UL 489”)”
How to read it
- Read it freeUL Standards & Engagement Digital View ↗
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- Where to get itShopULStandards.com ↗
A free or purchased copy may not be the edition the CFR names; check it against the edition above. Every incorporated standard can also be inspected at the National Archives (NARA) and at the agency named in the section that lists it.
UL 489 is copyrighted by its publisher; RegKnot shows its title and the editions the CFR names, not its text. Read from the eCFR's incorporation-by-reference sections, current as of October 26, 2026. The regulation text governs. All standards the CFR requires.