The 100mA (0.1A) is a replacement fuse meant to go in your home spa’s PC board. This fuse supplies power to your spa and the rest of its features, so maintaining it is key to the enjoyment of your spa. The slow blow fuse allows more power to flow without overwhelming the circuit.
The 5 Amp Slow Blow (FST) by Master Spas is a replacement fuse made to go in your home spa. The fuse allows a greater level of power to flow without disrupting the circuit or blowing the fuse itself. The piece is affordable, easy to install and can be a simple fix for a problem with your spa