GB 16916.21-2008 Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCB) - Part 21:Applicability of the general rules to RCCB functionally independent of line voltage
Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCB) - Part 21:Applicability of the general rules to RCCB functionally independent of line voltage