Braking disengagement switch for a drive wheel driven by an electric motor

A magnetic braking disengagement switch for a drive wheel set into rotation by an electric motor comprising at least two motor phases, the disengagement switch comprising a first disengagement channel intended to be connected at a first end of the first disengagement channel to a motor phase (v1, v3) of the electric motor and to a second motor phase (v2) of the electric motor at a second end of the first disengagement channel, the first disengagement channel being configured to switch between an open state and a closed state, the disengagement switch comprising a device for monitoring the state of the first disengagement channel, the monitoring device comprising:

• a first state transmitter connected to the first end of the first disengagement channel, configured to inject a first state signal (s1) between the first end of the first disengagement channel and the motor phase (v1, v3) of the electric motor;
• a first state receiver connected to the second end of the first disengagement channel, the first state receiver being configured to detect the first state signal (s1) passing through the first disengagement channel when the first disengagement channel is in the closed state, the first state receiver being configured to determine the state of the first disengagement channel.