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prSRPS IEC TR 61643-333:2026 ED1:2026

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

General information

10.99    

ISS

N017AC

Technical Report

29.240.10  

English  

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

NOW

PROJECT
prSRPS IEC TR 61643-333:2026 ED1:2026
10.99 New project approved

Related project

Adopted from IEC TR 61643-333:2026 ED1 IDENTICAL