IEC 61643-332
IEC 61643-332:2024
Components for low-voltage surge protection - Part 332: Selection and application principles for metal oxide varistors (MOV)
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.
CHF 345.-
Technical committee
TC 37/SC 37B Components for low-voltage surge protectionCategory
Electromagnetic Compatibility| Publication type | International Standard |
| Publication date | 2024-04-17 |
| Edition | 1.0 |
| ICS | 31.040.20 |
| Stability date | 2025 |
| ISBN number | 9782832285947 |
| Pages | 127 |
| File size | 5.48 MB |
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