I have quite the same feature request, my idea is this one :
We will have a "Fuse" type element (or a "Simple" element, if there is an other way to detect fuse) with properties like caliber and name/description, and will cut equipotential relationship (unlike terminal block).
The Fuse Tab could looks like terminal blocks, showing :
Element label (ex : "F15")
Caliber (ex : "2A", use comment field ?)
Equipotential name in
Equipotential name out
Fuse name/desciption (ex : "Pump", use designation field ?)