100A Porcelain Dropout Fuse Cutout High-voltage Cutout Fuse

At normally working via fuse link tightened the fuse tube is fixed to form up of close position.

In case system occur faults, fault current result in fuse melt immediately and take place electric arc, which let arc-extinguishing tube being heated and explode a lot of gas.

This will produce high pressure and blow off the arc along with tube.

After fuse link melt moving contact has no tightened strength again, mechanism is locked and fuse tube drop out, Cutout now is in open position, when it needs to switch off during cutout loading, operator shall via insulating operating sticks pull the moving contact, at its beginning main contact and auxiliary static 

Specifications:

Service Conditions:

1. Environment temperature:  -40^oC~ +40^oC

2. The location of on more than 1000m altitude (high altitude type not more than 3000m)

3.  Relative humidity:  Daily average value not more than 95%, on average less than 90%

4. Ice cover thickness not more than 20mm

5.  Wind speed not more than 34m/s

6.  Installation site should be no fire and explosion danger, chemical corrosion and violent cibration.