Drop-out Fuses Can Be Used As Circuit Sectionalizing Switches.

In most outdoor power distribution systems, the 33kv fuse fuse is designed to function as both a fuse and, under certain conditions, a line sectionalizing switch. The cover drop out fuse fuse is typically installed at critical nodes on high-voltage lines on poles, working in conjunction with distribution transformers and branch line connection components. Its mechanical structure causes the connecting components to shift downwards after the internal fuse melts, creating a visually clear break and aiding on-site personnel in assessing the operational status.

The core of this structural design lies in the combined design of mechanical and electrical components. The drop fuse fuse consists of an insulating tube, metal contacts, and a tubular assembly carrying the fuse. When a sudden current change causes the fuse to melt, the device falls from its mounting bracket under gravity, providing a clear break and simultaneously disconnecting the power without requiring additional auxiliary equipment.