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IEC TR 61643-333:2026 ED1

Components for low-voltage surge protection - Part 333: characteristic equations and life evaluation for metal oxide varistors (MOV)
2 qer 2026

General information

60.60     2 qer 2026

IEC

TC 37/SC 37B

Technical Report

29.240.10  

anglisht  

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Scope

IEC TR 61643-333:2026 presents the U-I/R-I characteristic equations and the life evaluation method for MOVs, which are used for applications up to 1 000 V AC or 1 500 V DC in power line, or telecommunication, or signalling circuits. They are designed to protect apparatus or personnel, or both, from high transient voltages.
This document specifically addresses the zinc-oxide type of MOVs.

Life cycle

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PUBLISHED
IEC TR 61643-333:2026 ED1
60.60 Standard published
2 qer 2026