CEI EN 61643-331 : 2005

FOREWORD
1 Scope
2 Normative references
3 Parametric terms, letter symbols
  and definitions
4 Service conditions
5 Basic function and MOV component
  description
6 Identification
7 Marking
8 Testing and measuring methods
9 Fault and failure mode
Annex A (normative) - MOV testing
        for IEC 61643-1 surge
        protective devices
Bibliography
Annex ZA (normative) - Normative
         references to international
         publications with their
         corresponding European
         publications

Describes specification for metal oxide varistors (MOV), which are used for applications up to 1000 V a.c. or 1 500 V d.c. in power line, or telecommunication, or signalling circuits.