A Circuit breaker is a switching device which can be operated automatically or manually for protecting and controlling of electrical power system. In the modern power system the design of the circuit breaker has changed depending upon the huge currents and to prevent from arc while operating.

It designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset to resume normal operation.

Circuit breakers are made in varying sizes, from small devices that protect low-current circuits or individual household appliance, up to large switchgear designed to protect high voltage circuits feeding an entire city. The generic function of a circuit breaker, or fuse, as an automatic means of removing power from a faulty system is often abbreviated as OCPD (Over Current Protection Device).

The importance of circuit breakers in the homes, industry, & institute purposes

Many homes still use traditional fuses but they can be replaced with an essential safety feature called the circuit breaker. The main function of a circuit breaker is to detect any faulty condition in the electrical system and discontinue the flow of electricity to ensure safety. Many properties have been destroyed and lives lost due to short circuits that could have been aborted in time if there were circuit breakers. For installation of a circuit is a task that they generally perform for most homes, buildings and commercial establishments.  

A short circuit can be defined as an abnormal low resistance current that is in between two nodes of an electrical circuit that is meant to have different voltages. When there is an excess flow of electric current, it can cause circuit damage that can lead to overheating and in some instances to an electrical fire. The main reason for short circuits is overloading but this can be avoided through circuit breakers that will detect the faulty condition. Generally, circuit breakers are more expensive than fuses but it is an investment that can protect your life and property.

Circuit breakers can be installed either indoors or outdoors. Considering the environment where the circuit breaker will operate, its outer mechanical body must be designed to withstand tough conditions. Circuit breakers that will be installed outdoors must have the necessary protection to ensure that internal circuitry is safe from potential damages from the environment. However, if you will seek the services of an electrician , you need worry about the different categories of circuit breakers because they are knowledgeable and skilled enough in the safety feature.  

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