One of the gPV Series Fuses; is a 10x38mm fuse link.
Specifically designed for the protection and isolation of photovoltaic strings.
The fuse links are capable of interrupting low overcurrents associated with faulted PV (reverse current, multi-array fault) string arrays.
They do not protect against over-voltage.
Fuses sold individually.
The suitable 2-Pole Holder can be seen Here.