#Add a fuse series#

They are divided into two parts AC Fuses & DC Fuses. Now we are discussing about different types of fuses. This results that, increase in temperature will decrease the current carrying capacity of the fuse. This graph shows the temperature versus the current carrying capacity of the fuse.In this process, at the point where three lines meet at 25 degrees Celsius, the current carrying capacity of the fuse will be 100% and after some time the current capacity decreases at slow blow fuse, it will also decrease up to 82% at 65 degrees C.

Temperature: In this, the operating temperature will be higher, therefore the current rating will be lesser, so the fuse melts.

Due to this resistance change and the voltage drop will become lesser.

Voltage Drop: When excessive current flows, the fuse element melts and opens the circuit.

Interrupting or Breaking Capacity: It is the maximum rating of current without harm interrupt by the fuse is known as breaking or interrupting capacity of the fuse.īreaking capacity > maximum rated voltage.

It measures the heat energy(energy due to current flow) of fuse & it is generated when fuse has blown.

I 2t Rating: This is the amount of energy which is carried by fuse element when there is an electrical fault or some short circuit happens.

#Add a fuse series#

Voltage Rating: In this characteristic, the voltage connected in series with fuse does not increase voltage rating.It is the current carrying capacity, which is measured in Amperes. Current Rating: The continuously conducting maximum amount of current holds the fuse without melting it is termed as current ratings.There are some of the important characteristics of the fuses in the electrical and electronic system which are as follows:. For example, if the calculated fuse rating is 8.659 amps, so for this we will use a 9 amp fuse. Use the next highest fuse rating after the calculation.The voltage must be greater than the circuit voltage for the proper protection of the device. Write down the power(watts) of the appliance – usually from the appliance manual,.Select the fuse, like time-delay fuses for inductive load and fast acting fuses for the resistive load.Here is the figure is shown fuse operation, fuse barrel(container), fuse link. This is not only a protector but it is also used as a safety measure to prevent humans from hazards. They also act as a circuit breaker which is used to break the circuit when the sudden fault occurs in the circuit. The fuse can be made up of the element like zinc, copper, silver &aluminum. The fuse can be replaced or changed with the new one with suitable ratings. The excessive flow may lead to the breakdown of wire and stops the flow of current. When the excessive current or heat is generated due to heavy current flows in the circuit, the fuse melts down due to the low melting point of the element and it opens the circuit. Fuse is always connected in series with the electrical circuit. This is connected between the ends of the terminals. It’s made up of thin strip or strand of metallic wire with noncombustible material. The fuses work on the principle of the heating effect of the current. That’s why we need fuses to protect our home appliances from harm.

When the fuse goes, a sudden spark occurs which may lead to turning your home into sudden darkness by disconnecting the power supply which saves any further mishappenings. The lives of television, computers, radios and other home appliances may also put at risk. If we don’t use fuses, electrical faults occur in the wiring and it burns the wire and electric appliances and may starts fire at home. Here is the basic circuit diagram & symbol of the fuse.įuses are used for the prevention of home appliances from the short circuit and damage by overload or high current etc.

Their strips are made up of aluminum, copper, zinc & it is always connected in series with the circuit to protect from overcurrent in the running cables. Also, it works as a circuit breaker or stabilizer which protects the device from damage.In the market, many types, features, and design of fuses are available nowadays. The fuse is made up of thin strip or strand of metal, whenever the heavy amount of current or an excessive current flow is there in an electrical circuit, the fuse melts and it opens the circuit and disconnects it from the power supply. Fuses are the protectors, these are the safety devices which are used to protect the home appliances like televisions, refrigerators, computers with damage by high voltage.