It stands for miniature circuit breaker. It is an automatically operated electrical switch designed and used to protect an electrical circuit from any kind of damage caused by excess current from overload or short circuit. The basic function of MCB is to break the flow of current after any fault is detected by it.
Whenever it detects that current is overloaded or the current is flowing in excessive manner than it automatically cuts the flow of current and protects your home or space from short circuiting and caching fire everywhere. Now you will think that why it is important while setting up a connection of electricity in our homes or other places?
There are different kinds of MCB that are used for different types of purpose. The types of MCBs are mentioned below with their functions and uses.
- Type A : it is an highly sensitive device which trip instantaneously when the current reaches 2-3 times the rated current.
- Type B : it is generally suitable for domestic uses. It can be also used in light commercial applications where switching surges are low.
- Type C : they are the normal choices for commercial and industrial purpose where some degree of electrical inrush is expected.
- Type D : these have more limited application, normally in industrial use. Example includes large battery system, transformer, x ray machine and some other types of lightings. It trip instantaneously when a current reaches 10-20 times the rated current with an operating time of 0.04-3sec.
- Type K : it is an sensitive device which trip instantaneously when the current reaches 8-12 times the rated current.
- Type Z : it is operated for a current value between 2-3 times the rated current with an operating time of less than 0.1sec.
Also Read : Electrical Switches
Miniature circuit breaker is specially designed to protect cables and line against overload and short circuit. They thus care for protecting this electrical equipment against excessive temperature rise and destruction if short circuit occurs. It is important that you take care and protect your home with using MCB. It protects from catching fire if short circuit occurs and automatically cuts the supply of the current.
Also Read : Best MCB In India
They are used mostly everywhere because of the automatic cut of current while short circuit or the temperature rise it protects your space from any kind of accident. Most home have 100-200 amp breaker boxes depending on the amount of electricity that the panel needs to handle. The number of circuit that are added to the main circuit breaker panel.
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