Standard 121201, Edition 9
UL 121201

Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations

UL Standard Edition 9 Published Date: September 15, 2017 Last Revision: April 01, 2021 ANSI Approved: April 01, 2021

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August 26, 2019 Redline Revision
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November 06, 2020
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May 31, 2019
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March 08, 2019
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Referenced Standards (20)

Below is a list of UL Standards referenced in UL 121201

StandardEditionTitle
50 14 Enclosures for Electrical Equipment, Non-Environmental Considerations
50E 3 Enclosures for Electrical Equipment, Environmental Considerations
157 2 Standard for Gaskets and Seals
508 18 Industrial Control Equipment
746B 5 Polymeric Materials - Long Term Property Evaluations
783 6 Electric Flashlights and Lanterns for Use in Hazardous (Classified) Locations
823 9 Electric Heaters For Use In Hazardous (Classified) Locations
844 13 Luminaires for Use in Hazardous (Classified) Locations
1836 6 Outline of Investigation for Electric Motors and Generators for Use in Class I, Division 2, Class I, Zone 2, Class II, Division 2 and Zone 22 Hazardous (Classified) Locations
1977 4 Component Connectors for Use in Data, Signal, Control and Power Applications
2237 1 Multi-Point Interconnection Power Cable Assemblies for Industrial Machinery
2238 3 Cable Assemblies and Fittings for Industrial Control and Signal Distribution
60079-0 7 Standard for Explosive Atmospheres - Part 0: Equipment - General Requirements
60079-1 7 Standard for Explosive Atmospheres - Part 1: Equipment Protection by Flameproof Enclosures
60950-1 2 Information Technology Equipment - Safety - Part 1: General Requirements
61010-1 3 Safety Requirements for Electrical Equipment For Measurement, Control, and Laboratory Use; Part 1: General Requirements
62368-1 3 Audio/Video, Information and Communication Technology Equipment - Part 1: Safety Requirements
60079-11 6 Explosive Atmospheres - Part 11: Equipment Protection by Intrinsic Safety
60079-15 5 Standard for Explosive atmospheres - Part 15: Equipment protection by type of protection
60079-30-1 1 Explosive Atmospheres - Part 30-1: Electrical Resistance Trace Heating - General and Testing Requirements
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Reverse Referenced Standards (10)

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