![header thumbnail](/images/publishers\ul_cover.gif)
UL 121201:9ED 2017-09-15
Current
The latest, up-to-date edition.
![header thumbnail](/images/publishers\ul_cover.gif)
Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations
Hardcopy
English
15-09-2017
PREFACE
1 Scope
2 Reference publications
3 Definitions
4 General requirements
5 Requirements for Class I, Division 2 equipment
6 Requirements for Class II, Division 2, Class III,
Divisions 1 and 2 equipment
7 Nonincendive circuits and nonincendive field wiring
8 Normally nonarcing components
9 Marking
10 Surface temperature requirements
11 Spark ignition testing of nonincendive circuits
12 Evaluation of nonincendive components
13 Evaluation of sealed devices
14 Evaluation of enclosed-break devices
15 Enclosure ingress protection for Class II and III
16 Drop tests and impact tests
17 Evaluation of an oil immersed equipment
18 Manufacturer's instructions
Annex A - Normative References (normative)
Annex B - Common Standards - Safety Requirements for
Electrical Equipment (informative)
Annex C - Suggested Warnings with French Equivalent
(informative)
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.