Information
Definition
EN 62955 is the UK-relevant BS EN IEC standard for Residual Direct Current Detecting Devices used in Mode 3 EV charging equipment. It is commonly associated with 6 mA DC residual current detection and how EV chargers interact with upstream RCD protection.
Why it matters
It matters because DC residual current can affect RCD operation, so UK installers and specifiers need to understand when built-in RDC-DD functionality is claimed and how it relates to BS 7671 protection design.
References
Standards and regulations
EN 62955
EN 62955 is the UK-relevant BS EN IEC standard for Residual Direct Current Detecting Devices used in Mode 3 EV charging equipment. It is commonly associated with 6 mA DC residual current detection and how EV chargers interact with upstream RCD protection.