A system comprising: a compressor comprising an electric motor configured to connect a power supply; a sensor module comprising: an input configured to receive current measurements generated by a current sensor (57, 60) based on a current of the power supply; and a processor that is connected to the input, characterized by: the processor being configured to determine a maximum continuous current for the electric motor set based on a type of refrigerant used by the compressor, to selectively compare the current measurements with a value equal to the maximum continuous current multiplied by a predetermined value, and to generate a signal when the current measurements are greater than the value for a predetermined period; and at least one of a control module and a system controller configured to selectively adjust at least one of compressor and refrigeration system operation based on the generation of the signal. a compressor comprising an electric motor configured to connect a power supply; a sensor module comprising: an input configured to receive current measurements generated by a current sensor (57, 60) based on a current of the power supply; and a processor that is connected to the input, characterized by: the processor being configured to determine a maximum continuous current for the electric motor set based on a type of refrigerant used by the compressor, to selectively compare the current measurements with a value equal to the maximum continuous current multiplied by a predetermined value, and to generate a signal when the current measurements are greater than the value for a predetermined period; and at least one of a control module and a system controller configured to selectively adjust at least one of compressor and refrigeration system operation based on the generation of the signal. an input configured to receive current measurements generated by a current sensor (57, 60) based on a current of the power supply; and a processor that is connected to the input, characterized by: the processor being configured to determine a maximum continuous current for the electric motor set based on a type of refrigerant used by the compressor, to selectively compare the current measurements with a value equal to the maximum continuous current multiplied by a predetermined value, and to generate a signal when the current measurements are greater than the value for a predetermined period; and at least one of a control module and a system controller configured to selectively adjust at least one of compressor and refrigeration system operation based on the generation of the signal. the processor being configured to determine a maximum continuous current for the electric motor set based on a type of refrigerant used by the compressor, to selectively compare the current measurements with a value equal to the maximum continuous current multiplied by a predetermined value, and to generate a signal when the current measurements are greater than the value for a predetermined period; and at least one of a control module and a system controller configured to selectively adjust at least one of compressor and refrigeration system operation based on the generation of the signal.