Applies to residual current operated circuit-breakers functionallyindependent of, or functionally dependent on, line voltage forhousehold and similar uses, not incorporating overcurrentprotection, for rated voltages not exceeding 440 V a.c. and ratedcurrents not exceeding 125 A, intended principally for protectionagainst shock hazard.This part includes definitions, requirements and tests, coveringall types of RCCBs.