What type of fuse is this?
Master Spa Fuses 5 Amp Slow Blow (FST)
Fuses
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Open Nov 10, 2025 - 12:16 PM
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Nov 10, 2025 - 12:16 PM
This is a 5 amp slow blow fuse, also known as a time-delay fuse. A slow blow (or time-delay) fuse can tolerate brief surges of electricity, allowing for temporary inrush currents without blowing immediately. This is beneficial in spas, where motors or pumps may cause short bursts of higher current on startup.
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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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