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

PD IEC/TR 61643-333:2026 — Components for low-voltage surge protection - Part 333: Characteristic equations and life evaluation for metal oxide varistors (MOV) is an international standard developed by a recognized standards body. This part of IEC 61643, which is a Technical Report, 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...

This standard covers: This part of IEC 61643, which is a Technical Report, 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...

This standard is intended for organizations, professionals, and stakeholders involved in various industries and sectors. It is applicable to manufacturers, service providers, regulatory bodies, and certification organizations.

The current published version is PD IEC/TR 61643-333:2026, published on 2026-06-01. Always check for amendments or pending revisions.

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