Requirements for automatic reclosing devices (ARDs) for circuit breakers-RCBOs-RCCBs for household and similar uses;
German version EN 50557:2011 Class/Status:
VDE Art. No.: 0640004
This standard applies to automatic-reclosing devices (hereinafter referred to as “ARD”) for household and similar uses, for rated voltage not exceeding 440 V a.c. intended to be used in combination with circuit breakers and/or RCCBs and/or RCBOs.
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