RC5-2/133 is an RC surge protector for reducing the maximum surge peak value and limiting or even completely eliminating the high bias frequencies when used with an AC-operated conventional contactor for a nominal control voltage between 50 ...133 V AC 50/60Hz., Advantages:, - The surge protector is snapped onto the top or side part of the contactor or auxiliary contactor without changing the dimensions of the device., - Very fast clipping: attenuation of steep fronts and thus of high frequencies. No operating delays.