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immediate downloadReleased: 2026-06-02
IEC TR 61643-333:2026
Components for low-voltage surge protection - Part 333: characteristic equations and life evaluation for metal oxide varistors (MOV)
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| Standard number: | IEC TR 61643-333:2026 |
| Released: | 2026-06-02 |
| Edition: | 1 |
| ICS: | 29.240.10 |
| Pages (English): | 40 |
| ISBN (English): | 9782832712603 |
DESCRIPTION
IEC TR 61643-333:2026
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.