Why electronic and not electromechanical ELCB's?

South Africa's 40 years ofexperience in the manufacture and application of sensitiye earth leakage protection deyices, together with th~more recent experiences coyering millions ofinstalled units oyer several decades haye resulted in a better understanding of not only the adyantages, but also ofthe limitations of HCB's.

In Europe, where electromechanical ELCB's are used almost exclusiyely, the question ofreliability ofinstalled ELCB's has become a subject of major concern and attention. The popular hype regarding perceived reliability of electronic components was not sufficient to preyent the major South African manufacturer, some five years ago from changing their entire ELCB range from electromechanical to electronic technology ELCB's. The improvements in reliability that resulted from this decision are complemented by their freedom from safety performance limitations often found in lower specification electromechanical earth leakage circuit breakers.