There are four types of protection.
Surge protectors protect a device from high energy jolts coming down the power lines by blowing out sacrificial components.
Arc fault interrupts protect the home electrical system from a short circuit by shutting down the power if a sustained increase in power on the line occurs between line and line, line and neutral, or line and ground.
Ground fault interrupts protect users from short circuits by measuring the difference in voltage from line to ground and shutting down the power if the ground fails.
Fuses simply melt the conductive strip if the current draw is too high. They are simple, yet add a good deal of protection from house fires.
In this case, I'd use a 3A slow blow or a 5A normal fuse for the proper level of protection.
Edited by WalnutHill - 10/12/15 at 1:19pm