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EN IEC 61643-332:2024

Components for low-voltage surge protection - Part 332: Selection and application principles for metal oxide varistors (MOV) EN IEC 61643-332:2024

Publication date:   Jul 17, 2024

General information

60.60 Standard published   May 24, 2024

CENELEC

CLC/SR 37B Components for low-voltage surge protection

European Norm

31.040.20   Potentiometers, variable resistors

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Scope

IEC 61643-332:2024 describes the theory of operation, principles for the selection and application of MOVs to be connected to power lines or telecommunication or signalling circuits, up to 1 000 V AC or 1 500 V DC. These SPCs are designed to protect apparatus or personnel, or both, from high transient voltages. This document applies to MOVs having two electrodes and voltage dependents elements with or without disconnectors. It does not apply to assemblies that include MOVs and their influence on the MOV's characteristics. This standard specifically discusses the zinc-oxide type of MOVs.

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PUBLISHED
EN IEC 61643-332:2024
60.60 Standard published
May 24, 2024