Technical FAQs 4

What causes blown fuses & tripped Breakers?

One of the most common causes of blown fuses and tripped breakers is an overloaded circuit. When too many electrical appliances are in use on a single circuit, they draw more power than the circuit can safely handle.

What is a blown fuse?

A blown fuse is a safety device that ‘blows’ when too much current is present in an electrical circuit. It stops the current flow, thus avoiding further damage. Reasons for this include: Knowing why a fuse ‘blows’ can help identify and sort out problems swiftly. Figuring out the cause of a blown fuse is really important!

What happens when a circuit breaker blows a fuse?

When a fuse blows in a circuit, it must be replaced before the device or appliance can be used again. Circuit breakers work in a similar way, but they are resettable. When a fault is detected (typically a short circuit or an excessive amount of current flowing through the circuit), the circuit breaker interrupts the flow of current.

What is a circuit breaker fuse?

The circuit breaker fuse is a crucial component of any electrical system. It protects the circuit from overheating and causing a potential fire hazard by automatically shutting off the power when it senses an overload or short circuit.

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Blown fuse in circuit breaker in South-Africa

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