Patent ID: 7738231

Claim:
A device for protecting an electrical installation from overvoltages, comprising: (a) at least one protection component to be connected to the electrical installation, (b) disconnection means capable of changing from a closed configuration in which the protection component is connected to the electrical installation to an open configuration in which the protection component is disconnected from the electrical installation, and (c) signalling means capable of indicating the configuration of the disconnection means, wherein the disconnection means comprise a spring leaf, of which a free end forms a mobile disconnection element, whereby the free end of the spring leaf is capable of moving, when changing from the closed configuration to the open configuration, in a rotational movement according to a first trajectory, wherein the signalling means comprise a mobile signalling element, and wherein the free end of the spring leaf, when going from the closed configuration to the open configuration, cooperates with the mobile signalling element to drive the mobile signalling element in rotation along a second trajectory different from the first trajectory.