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Active standard | Published: 02/06/2026
IEC/TR 61643-333-ed.1.0
Components for low-voltage surge protection - Part 333: characteristic equations and life evaluation for metal oxide varistors (MOV)
Available languages: English
Available design: electronic design (pdf), Print design, CD-ROM
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Detail information
Designation: IEC/TR 61643-333-ed.1.0
Publication date: 02/06/2026
Pages: 40
Country: International technical standard
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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.Popular Publishers
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