UL PRODUCT CATEGORY

Industrial Control Equipment for Use in Hazardous Locations, NNGZ


Guide Information for Equipment for Use in and Relating to Class I, II and III, Division 1 and 2 Hazardous Locations

This category covers the following devices for use in hazardous (classified) locations:

Auxiliary devices
Combination motor controllers
Control assembly covers
Control panels and assemblies
Enclosed slip rings
Flame-control panels
Float- and pressure-operated motor controllers
Magnetic motor controllers
Manual motor controllers
Miscellaneous motor controllers
Motor controllers over 1500 volts
Power circuit and motor-mounted apparatus
Power conversion equipment
Programmable controllers

Open-type equipment — Open-type industrial control equipment is intended for installation within a suitable enclosure. Examples of installation issues to consider when determining the suitability of the equipment enclosure include the following, as applicable: 1) the involved area classification, 2) protection against any specific environmental conditions, 3) thread engagement, and 4) whether a tool is required for opening of the enclosure. Installation requirements relating to the suitability of the enclosure are specified in the instructions or markings for the open-type equipment.

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Last Updated on 2010-09-20
NNGZ.GuideInfo NNGZ Active 20100920 20100920

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