The 1 AMP Line/Fan replacement fuse is compatible with Rainbowair Ozone Generator Models 5200, 5210, and 5401, and is located on the left side of the unit when viewed from the back; it powers the fan.
This same 1 AMP fuse also serves as the High Voltage/Ozone fuse for Rainbowair Model 5600, where it is positioned on the right side of the unit, viewed from the back.