zaro

How are Cartridge Fuses Made?

Published in Electrical Fuse Manufacturing 2 mins read

Cartridge fuses are constructed from a few key components, primarily focusing on the materials used for the protective housing and the internal conductive element. Based on the provided reference, the making of a cartridge fuse involves selecting specific materials for its body and internal wiring.

Key Components and Materials

A cartridge fuse is essentially composed of a protective tube or cartridge and an internal wire designed to melt when current exceeds a safe level. These components are made from specific materials to ensure proper function and safety.

The Cartridge Body

The outer shell, known as the cartridge, houses the internal fuse element. According to the reference, this cartridge can be made from a variety of materials.

  • Materials listed:
    • Glass
    • Ceramic
    • Porcelain

The reference describes these materials as "conductive materials," although glass, ceramic, and porcelain are commonly known for their insulating properties in electrical applications. They serve as the protective casing for the internal fuse element.

The Resistor Wire

Inside the cartridge is a wire or element designed to serve as the resistor wire. This wire is crucial as it's the part that melts when an overcurrent occurs, breaking the circuit.

  • Typical materials for the resistor wire include:
    • Copper
    • Silver
    • Aluminium
    • Zinc

These materials are chosen for their specific melting points and conductivity characteristics.

Contact Points

Cartridge fuses are also manufactured with contact points on each end. These points facilitate the connection of the fuse into a circuit or fuse holder.

Voltage Compatibility

The manufacturing process ensures the fuses are designed to operate safely within specific voltage ranges. The reference notes that these types of cartridge fuses are typically compatible with 240-volt settings.

Summary of Materials

Here's a quick overview of the materials cited in the reference used in the making of cartridge fuses:

Component Materials
Cartridge Body Glass, Ceramic, Porcelain (described as conductive in the reference)
Resistor Wire Copper, Silver, Aluminium, Zinc

In essence, making a cartridge fuse involves assembling a protective tube (the cartridge) made from materials like glass, ceramic, or porcelain, containing a precise internal resistor wire made from materials such as copper, silver, aluminium, or zinc, and affixing contact points to the ends for electrical connection.