The safety fuse

Principle

Damaged leads or defective electrical equipment can lead to short-circuits. The actual piece of electrical equipment - or more accurately, its resistance - are hereby circumvented. The result is an inadmissibly high current, which can cause a fire to break out because of the resulting excessive heating up of current-carrying parts.

In this experiment, students should learn the principle on which the simplest and oldest safety device, the safety fuse, functions.

Tasks

1. Set up a circuit containing a model of a safety fuse.
2. Examine the function of an electric fuse.

Learning objectives

The students should understand the influence of current and voltage on the temperature of a piece of wire. This principle should be transferred to the fuse.

Benefits

• No additional cable connections between the building blocks needed - clear arragned and quick setup
• Contact saftey due to puzzle blocks system
• Corrosion-free gold plated contacts
• Doubled earning sucess: Electric circuit diagram on top, real components can be seen unterside