An electrical installation device, operable to connect an electric main circuit, and to achieve device functionalities, said installation device having at least one current transformer coupled to the electric main circuit, the secondary terminals of the transformer being connected to an electronic circuit, said electronic circuit being operable to process the secondary current and to employ the secondary current for achieving device functionalities, wherein the electronic circuit comprises a rectifier, with a plus terminal or voltage reference source (V 3) and a minus terminal (V 1), to rectify the secondary current, characterized in that the electrical installation device has a compensation signal circuit, said compensation signal circuit being operable to add a controlled compensation signal to the rectified secondary current, wherein the compensation circuit (33, 33b) comprises a voltage regulator circuit, an op-amp, a shunt resistor (R S, 9), and five further resistors (R 1, 22; R 2, 11; R 3, 36; R 4, 35; R 6, 37), wherein the voltage regulator circuit is arranged between the plus terminal (V 3) and a ground (V 0), the shunt resistor (R S, 9), is arranged between the ground (V 0) and the minus terminal (V 1), resistors R 4 and R 3 build a voltage divider between the plus terminal (V 3) and the ground (V 0), the mid of R 4 and R 3 being connected to a non-inverting input of the op-amp, resistors R 6 and R 1 build a voltage divider between the ground (V 0) and the minus terminal (V 1), the mid of R 6 and R 1 being connected to an inverting input of the op-amp, and the resistor R 2 is arranged between an output of the op-amp and the inverting input of the op-amp, wherein the compensation signal is a compensation current (I SC) through the shunt resistor. at least one current transformer coupled to the electric main circuit, the secondary terminals of the transformer being connected to an electronic circuit, said electronic circuit being operable to process the secondary current and to employ the secondary current for achieving device functionalities, wherein the electronic circuit comprises a rectifier, with a plus terminal or voltage reference source (V 3) and a minus terminal (V 1), to rectify the secondary current, characterized in that the electrical installation device has a compensation signal circuit, said compensation signal circuit being operable to add a controlled compensation signal to the rectified secondary current, wherein the compensation circuit (33, 33b) comprises a voltage regulator circuit, an op-amp, a shunt resistor (R S, 9), and five further resistors (R 1, 22; R 2, 11; R 3, 36; R 4, 35; R 6, 37), wherein the voltage regulator circuit is arranged between the plus terminal (V 3) and a ground (V 0), the shunt resistor (R S, 9), is arranged between the ground (V 0) and the minus terminal (V 1), resistors R 4 and R 3 build a voltage divider between the plus terminal (V 3) and the ground (V 0), the mid of R 4 and R 3 being connected to a non-inverting input of the op-amp, resistors R 6 and R 1 build a voltage divider between the ground (V 0) and the minus terminal (V 1), the mid of R 6 and R 1 being connected to an inverting input of the op-amp, and the resistor R 2 is arranged between an output of the op-amp and the inverting input of the op-amp, the voltage regulator circuit is arranged between the plus terminal (V 3) and a ground (V 0), the shunt resistor (R S, 9), is arranged between the ground (V 0) and the minus terminal (V 1), resistors R 4 and R 3 build a voltage divider between the plus terminal (V 3) and the ground (V 0), the mid of R 4 and R 3 being connected to a non-inverting input of the op-amp, resistors R 6 and R 1 build a voltage divider between the ground (V 0) and the minus terminal (V 1), the mid of R 6 and R 1 being connected to an inverting input of the op-amp, and the resistor R 2 is arranged between an output of the op-amp and the inverting input of the op-amp, wherein the compensation signal is a compensation current (I SC) through the shunt resistor.