Drop-out Fuse Cutout

In electrical distribution, a fuse cutout or Drop-out Fuse Cutout is a combination of a fuse and a switch, used in primary overhead feeder lines and taps to protect distribution transformers from current surges and overloads. An overcurrent caused by a fault in the transformer or customer circuit will cause the fuse to melt, disconnecting the transformer from the line. It can also be opened manually by utility linemen standing on the ground and using a long insulating stick called a hot stick.
The fuse elements, or fuse links used in most distribution cutouts are tin or silver alloy fuse links that melt (or operate) when exposed to high current conditions. The ampere ratings of fuse elements rated from 100 ampere to 200 amperes.

Technical Parameter
Rated voltage: 12kV
Rated frequency: 50Hz
Rtaed current: 100A
Breaking Current: 8000A
Power frequency withstand voltage (wet): 30kV
Power frequency withstand voltage (dry): 42kV
BIL: 125kV
Creepage distance: 372mm