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.

* * * * * * * * * * * * * * * * * * * * * * * * *

UL, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. UL shall not incur any obligation or liability for any loss, expense or damages, including incidental or consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Guide Information.

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

The appearance of a company's name or product in this database does not in itself assure that products so identified have been manufactured under UL's Follow-Up Service. Only those products bearing the UL Mark should be considered to be Certified and covered under UL's Follow-Up Service. Always look for the Mark on the product.

UL permits the reproduction of the material contained in the Online Certification Directory subject to the following conditions: 1. The Guide Information, Assemblies, Constructions, Designs, Systems, and/or Certifications (files) must be presented in their entirety and in a non-misleading manner, without any manipulation of the data (or drawings). 2. The statement "Reprinted from the Online Certifications Directory with permission from UL" must appear adjacent to the extracted material. In addition, the reprinted material must include a copyright notice in the following format: "© 2019 UL LLC".