Upgrading of compact load break switches to a circuit breaker function

A cost effective new component especially for existing 12 kV distribution networks equipped with Magnefix type switchgear is discussed. After summarising the present situation in The Netherlands, it is shown that the availability of electricity can be much improved by applying the described component, a smart combination of existing single pole hard gas load-break switch disconnectors and a new design of a three pole vacuum circuit breaker including a protection system. The network improvement, the limitation of costs and the needed space have led to the described design. The combination is tested according to the relevant IEC standards