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The reason for a fuse to break the current within a circuit is to protect the circuit itself and prevent fire. When an excess of electricity (or, too much electricity for the circuit to safely handle) attempts to pass through the fuse, a physical break within the connections of the fuse occurs. By breaking the connection, the excessive electricity is stopped, and prevented from causing possible overheating within the circuit, which could result in fire and permanent damage to the circuit.

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Q: Why do fuses break the current in a circuit?
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Fuses increase or decrease the voltage of a current electrcity?

Fuses have absolutely no effect whatsoever on the voltage applied to a circuit. Fuses are simply overcurrent protection devices, intended to disconnect the circuit in the event of a sustained overload current or a short-circuit fault current.


How are fuses and switches similar?

A fuse can break the current flowing in a circuit only once whilst a switch can break the current flowing in a circuit many times. In other words a switch can switch the current on and off - and then on again and off again - indefinitely but a fuse can only switch off the current once.


A break in the wires of an electric current will the circuit and the current?

A break in the wires of an electric current will break or cut the circuit and stop the current from flowing.


Why fuse wire is placed in series with the device?

circuit breaker and fuses used in series to break the circuit in overcurrent situation to block current to flow through circuit.


Is a circuit breaker an alternative fuses?

Circuit breakers do the same thing as fuses. They interrupt current flow when a certain preset point is reached. The difference between circuit breakers and fuses are that circuit breakers are resettable and reusable, whereas fuses are one time devices that must be replaced after they blow.


What do circuit breakers and fuses have in common?

Both fuses and circuit breakers cut off a circuit from its power supply when the total current through the circuit exceeds the current rating of the fuse or circuit breaker, usually due to a short to ground or overloading of the circuit. Both use materials that respond to heat.


Which device designed to open an overloaded circuit and prevent overheating?

Fuses and circuit breakers are designed to open a circuit when an excess amount of current occurs, so as to break that flow of current.A circuit breaker or fuse.


What do you use fuses in?

Electrical circuits, to limit the maximum current flow. Fuses will "blow", or burn out, and cause an open circuit, to stop the flow of current when it could potentially damage a circuit, system, or device.


Where are the fuses for towing lights on a 2002 ford explorer?

Fuses blow when there is a short circuit or an over current condition.


What is a break in an electrical circuit called?

A break in an electric circuit is called an open circuit. Electric current will not flow through an open circuit.


What devices are used to deliberately create an open circuit when the current exceeds a specific value?

fuses or circuit breakers


What circuit protector?

It is usually classed as a device that will open the circuit if the current in the circuit goes high. Two examples of these types of devices are fuses and circuit breakers.