MINIATURE CIRCUIT BREAKERS/ RCBO’s/ RCCB’s: Supply and erection of Miniature Circuit Breakers/ RCBO’s/ RCCB’s in the existing MCB distribution board as per PWD General Specifications 2010 including connections with suitable size of thimbles/lugs. RCCB’s: Residual Current Circuit Breaker (RCCB for earth leakage protection) double pole 16/25amp., sensitivity 100mA (as per standard IEC 61008) suitable for 240/415 volts 50 cycles AC supply