... 10,16,20,25,32A 4. SAA certificate Single Pole Circuit Breaker RCBO 4.5kA:Scope of ... used to protect the building illumination and power distribution system. Product has passed CB, SAA certificate. Main Technical ... for a certain time (normally one month), test button should be pressed once in a state of ... function of RCBO is normal and reliable (press test button once, the RCBO can break off once ). If ...