Fuse assembly for Models 100E, 100SSE, 300E, 300SSE, TWS-P, TWS-G, SBS-P, and SBS-G. Should be installed by an appliance technician or certified electrician. This fuse is for distillers with I/O, (On/Off) switch. Contact us if your distiller does not have an On/Off switch for assistance. Order short fuse for distillers without I/O switch, (manufactured before February 2017). Order Long fuse for distillers with I/O switch, (manufactured after February 2017.)