How to check a slow blow fuse?
Master Spa Fuses 5 Amp Slow Blow (FST)
Fuses
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Open Nov 10, 2025 - 12:18 PM
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Nov 10, 2025 - 12:18 PM
To check a slow blow fuse, first visually inspect it for any signs of a broken or melted filament inside the glass tube. If it looks intact, use a multimeter set to continuity or resistance mode to test if current can pass through; a good fuse will show low resistance or a beep sound.
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Master Spa Fuses 5 Amp Slow Blow (FST)
The 5 Amp Slow Blow (FST) by Master Spas is an exact replacement fuse for your home spa. If certain features of your spa are not working properly, a broken or blown fuse could be the culprit. When a fuse is blown or is malfunctioning, it can cause some parts of your spa to break down or stop working...
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