Method and circuit arrangement for reduction of common mode current

The method involve applying an electric quantity (Vs) in an injection point (26) connected through an impedance (28) to a single-phase or three-phase powerline (5) of an electric circuit (4), using an electronic component (21) for exchanging the electrical energy in the powerline, where the electronic component is deprived of a field-effect transistor. The electric quantity is applied to the powerline for reducing a common mode current (i) circulating between an internal mass (13) of the electric circuit and the ground. Independent claims are also included for the following: (1) an electronic component for implementing a method for reducing the common mode current circulating between an internal mass and ground (2) a electric circuit comprising a powerline.