GB 10963-1989 | Circuit Breakers for Household and Similar Use GB 14048.2-1994 | Low Voltage Switchgear and Control Equipment Low Voltage Circuit Breakers GB 16916.1-1997 | Residual Current Operated Circuit Breakers (RCCBs) without Overcurrent Protection for Household and Similar Use Part 1: General Rules GB 16916.21-1997 | Residual Current Operated Circuit Breakers (RCCBs) without Overcurrent Protection for Household and Similar Use Part 2.1: Applicability of General Rules to RCCBs with Action Functions Independent of Line Voltage GB 16916.22-1997 | Residual Current Operated Circuit Breakers (RCCBs) without Overcurrent Protection for Household and Similar Use CB) Part 2.2: Applicability of General Rules to RCCBs with Action Functions Related to Line Voltage