Drop-Out Fuse

Sangao high quality Drop-Out Fuse helps to protect electrical equipment and systems from damage and hazardous electrical conditions. The fuse unit contains a fusible element made of a special material consisting of a fuse unit encapsulated in a ceramic insulator mounted on a support structure. Drop out fuses are an important component of the entire electrical safety system. When an overload current flows through, the component will melt and disconnect the circuit. This action can interrupt the current and help prevent damage to downstream electrical equipment.

Usage conditions:

1. The ambient temperature is within the range of -30 ℃ to+40 ℃;

2. The altitude shall not exceed 1000 meters; (Adjustments are required for distances exceeding 1000 meters).

3. The frequency of the AC power supply shall not be less than 48Hz and not exceed 52Hz;

4. The seismic intensity shall not exceed 7 degrees;

5. The maximum wind speed shall not exceed 35 meters per second.

'Drop off' refers to the characteristic action of the fuse when it is activated. When the fusible element melts due to overload current, it will cause the fuse unit to fall from its normal working position, hence the name "drop fuse".

Do you know what parts a drop out fuse usually consists of? It's actually quite simple, mainly including: shell, fuse element, operating mechanism, wiring terminal, and some indicator devices.

Firstly, let's talk about the fuse element. What exactly does this part do? In fact, it is the real "responsible" part in the fuse, usually responsible for conducting current. Once the current exceeds its capacity, it will quickly melt, disconnecting the circuit and providing protection. These fuse elements are usually made of metal, ceramic, or other materials, specifically designed to cut off current in case of abnormalities.

How did the fuse "jump" out of the circuit? This involves the operating mechanism. Some use spring arms, some use fuse chains, and various other disconnect structures, all with the same purpose: once overcurrent occurs, the fuse element will melt, and this mechanism will "detach" the fuse from the circuit, completely disconnecting the circuit and preventing the accident from expanding.

Next is the wiring terminal. What are their uses? As the name suggests, it is used to connect fuses with the power system. Some are screw connections, while others are plug in connections, depending on the design of different products.

Finally, although the appearance and structure of drop out fuses from different manufacturers and for different purposes may vary, their core principles and basic components are similar.