A wireless power transfer system comprising: a first converting unit configured to convert a first DC voltage of an input power to a first AC voltage; a contactless power transfer unit communicatively coupled to the first converting unit and configured to receive the input power having the first AC voltage from the first converting unit and transmit the input power; a second converting unit communicatively coupled to the contactless power transfer unit and configured to receive the input power from the contactless power transfer unit and convert the first AC voltage of the input power to a second DC voltage, wherein the input power having the second DC voltage is transmitted to an electric load; and a switching unit coupled to the contactless power transfer unit and the second converting unit, and comprising a sensor electrically coupled to the electric load and configured to determine the second DC voltage across the electric load, and a controller electrically coupled to the sensor and configured to send a first control signal if the second DC voltage is greater than a first threshold value to decouple the second converting unit from the contactless power transfer unit; a first transceiver electrically coupled to the sensor and configured to receive a voltage signal representative of the second DC voltage across the electric load, receive the first control signal from the controller, and transmit the voltage signal and the first control signal; a second transceiver communicatively coupled to the first transceiver and configured to receive the voltage signal and the first control signal from the first transceiver; a control unit electrically coupled to the second transceiver and the first converting unit and configured to receive the voltage signal and the first control signal from the second transceiver, and deactivate the first converting unit if the first control signal is received from the second transceiver; characterised in that the control unit is configured to transmit a reset signal to the controller via the second transceiver and the first transceiver, wherein the reset signal is transmitted a predetermined time period after the control unit deactivated the first converting unit. a first converting unit configured to convert a first DC voltage of an input power to a first AC voltage; a contactless power transfer unit communicatively coupled to the first converting unit and configured to receive the input power having the first AC voltage from the first converting unit and transmit the input power; a second converting unit communicatively coupled to the contactless power transfer unit and configured to receive the input power from the contactless power transfer unit and convert the first AC voltage of the input power to a second DC voltage, wherein the input power having the second DC voltage is transmitted to an electric load; and a switching unit coupled to the contactless power transfer unit and the second converting unit, and comprising a sensor electrically coupled to the electric load and configured to determine the second DC voltage across the electric load, and a controller electrically coupled to the sensor and configured to send a first control signal if the second DC voltage is greater than a first threshold value to decouple the second converting unit from the contactless power transfer unit; a first transceiver electrically coupled to the sensor and configured to receive a voltage signal representative of the second DC voltage across the electric load, receive the first control signal from the controller, and transmit the voltage signal and the first control signal; a second transceiver communicatively coupled to the first transceiver and configured to receive the voltage signal and the first control signal from the first transceiver; a control unit electrically coupled to the second transceiver and the first converting unit and configured to receive the voltage signal and the first control signal from the second transceiver, and deactivate the first converting unit if the first control signal is received from the second transceiver; characterised in that the control unit is configured to transmit a reset signal to the controller via the second transceiver and the first transceiver, wherein the reset signal is transmitted a predetermined time period after the control unit deactivated the first converting unit.