The Littelfuse Industrial series MOV devices are typically designed into equipment that is exposed to high levels of line disturbance. Their physical size is larger than the others and several mounting approaches are used to enable easy installation and replacement. The disc technology used is the same as the smaller types. The industrial types are larger to allow for a higher level of current during a clamping event. All of the voltages routinely found in industry are available, beginning at 130VAC.