Device for powering electric or electronic devices operatively associated with a circuit breaker

Device for powering one or more electric/electronic devices operatively associated with a low-voltage circuit breaker, comprising means for taking energy from a power supply line, electronic regulating means for receiving the energy collected by said means for taking power as input and delivering as output to the electric/electronic device a power supply voltage (Vout) having a value within a preset range with respect to a reference voltage (VR), characterized in that said electronic regulating means comprise: - energy storage means chargeable by means of said energy collected, at the terminals of which a voltage (VCL) is established that is indicative of the power supply voltage (Vout) delivered to the electric/electronic device; - a circuit for enabling/disabling the charging of the storage means; - a feedback circuit that receives a signal indicative of the voltage (VCL) at the terminals of the storage means and that sends a signal to the enabling/disabling circuit to trigger the disabling or enabling of the charging process in order to keep the value of the voltage at the terminals of the storage means within said preset range, said feedback circuit enabling the charging phases so as to power the storage means continuously up until the value of the voltage at their terminals comes within the preset range.