SWITCH UNIT, AND RELATED METHOD

摘要

A switch unit comprising a current switching device drivable by an electromagnetic actuator for opening/closing an electric circuit associated to the switch unit, energy storage means for storing electric energy for the electromagnetic actuator, electronic controller means which are supplied by an external power line and control a supply of the electric energy from the energy storage means to the electromagnetic actuator. The switch unit comprises emergency procedure operating means associated with the electronic controller means and provided with further energy storage means; the emergency procedure operating means are configured for enabling driving of the current switching device and opening the associated electric circuit in an emergency condition in which a lack or drop or irregular supply of the external power line is experienced.