Circuit for protecting a DC network with DC loads against overvoltage

A circuit (S) for protecting at least one DC network with DC loads (1) connectable to the circuit (S), wherein the circuit (S) is suitable and configured to supply the DC network with electric energy from a single-phase or multi-phase AC power grid via a rectifier (G), to protect the DC network against overvoltages from the AC power grid, comprising

• the circuit (S) includes means (2, 3, 4, TH1, LS, CS, DU, DV, DW) for detecting an overvoltage, which is suitable and configured to detect an overvoltage at the input of the DC network,
• the circuit (S) includes means (2, 3, 4, TH1, LS, CS, DU, DV, DW) for transferring the current from one or several current-carrying thyristors (THU1, THV1, TW1) of a first group of thyristors (THU1, THV1, THW1) of the rectifier (G), as soon as the means for detecting the overvoltage has detected an overvoltage, wherein transfer of the current forces the thyristor or thyristors (THU1, THV1, THW1) of the first group to turn off.