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DIN EN IEC 60947-4-3 VDE 0660-109:2025-10

Low-voltage switchgear and controlgear

Part 4-3: Contactors and motor-starters – Semiconductor controllers and semiconductor contactors for non-motor loads

(IEC 60947-4-3:2020); German version EN IEC 60947-4-3:2024
Class/Status: Standard, valid
Released: 2025-10
VDE Art. No.: 0600543

This document covers low-voltage semiconductor controllers and semiconductor contactors (solid-state contactors) intended for the use with non-motor loads. As semiconductor controllers, they have many capabilities beyond the simple switching on and off of non-motor loads. As semiconductor contactors, they perform the same functions as mechanical contactors, but utilize one or more semiconductor switching devices in their main poles.