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Document UL 489 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
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UL 489 Document Information:
Title
UL Standard for Safety Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures
Underwriters Laboratories Inc.
Publication Date:
Sep 1, 2009
Scope:
The requirements of this standard cover molded-case circuit
breakers, circuit breaker and ground-fault circuit-interrupters,
fused circuit breakers, and accessory high-fault protectors. These
circuit breakers are specifically intended to provide service
entrance, feeder, and branch circuit protection in accordance with
the National Installation Codes in Annex B, Ref. No.1. This
standard also covers instantaneous-trip circuit breakers (circuit
interrupters) specifically intended for use as part of a
combination motor controller in accordance with the National
Installation Codes in Annex B, Ref. No. 1.
This standard covers molded-case switches and fused molded-case
switches.
This standard covers devices rated at 600 volts or less and 6000
amperes or less.
The devices referenced in 1.1 and 1.2 are intended for
installation in an overall enclosure or as parts of other devices
such as panelboards. The acceptability of the combination will be
determined when the complete product is investigated.
This standard covers circuit-breaker enclosures and accessory
devices intended for use with the devices described in 1.1 and
1.2.
This standard does not cover low-voltage power circuit breakers
covered in Annex B, Ref. No. 3 and Ref. No. 4 or supplementary
protectors covered in Annex B, Ref. No. 5.
This standard contains supplements covering the requirements for
molded-case circuit breakers for:
Marine Use;
Naval Use;
Uninterruptible Power Supply Use;
Classified Circuit Breakers; and
Software in Programmable Components.
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