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What means zero-voltage switching?

April 26, 2017means switching

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What means zero-voltage switching?

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• All standard DOLD Semiconductor relays and contactors are designed as zero-voltage switches. When a control voltage is applied switching of the Semiconductor relay is in the zero crossing of the sinusoidal alternating voltage of the system. This minimizes electromagnetic interferences. In this way also starting currents for ohmic loads with PTC thermistor behaviour are limited.