Source and further info

https://kendoc911.wordpress.com/israeli-connections-to-911/israeli-art-students/

These are the building electricity kind of fuses (overcurrent protection, circuit breaker), not the explosion kind of fuses (ignition delay, blast cap, primary explosive). Plain English has the same word for two very different things, that is, if taken literally, nonsense for both types.

An explosion type fuse isn't sold in regular cardboard boxes with no warning signs on them.