How To Know If Your MCB Electrical Switch Isn’t Working Good

MCB’s are the lifeboats, invented by the electrical industry. It stands abbreviated for Miniature Circuit Breaker. Every piece of invention, big or small, has some certain intricacies that are needed to be looked after, before being called perfect. Since it has been a revolutionary invention, the demand for it has increased many times and to meet them adequately, so has the supply. But there are times, where you might not be able to recognize the faults within your own MCB, for you might not know them at all. Before getting into the details of the defects, you should first know what an MCB is and why is it essential.
An MCB electrical switch, as popularly defined, refers to a small electrical switch that aims to protect an electrical circuit, operated by overload and is considered as an alternative to fuse for its energy saving efficiency features.
Now that we know what is an MCB, let’s take a look at the signs which would be showing on your MCB when it doesn’t work as well as expected:

It Trips Way Too Easily

Frequent and high tripping of your MCB electrical switches is the biggest indicator of a faulty switch. The reasons for tripping maybe numerous, but it is actually the tripping that causes an MCB to work inefficiently.

It Maybe Overloaded

An overloaded circuit is another big reason why they do not work that efficiently. It implies that the flow of electricity is way too much than needed and may also lead to a leakage of electricity - which isn’t good at all for your workplace or your home as well. Once you know that your MCB is overloaded, it is time to call an electrician or might even change it for your safety.

It Maybe A Faulty Appliance

This can always be a good possible reason for your MCB electrical switch to work inefficiently. It is your service panel that needs to be labeled to show which breaker actually controls each circuit. When a breaker trips down and you are suspecting that a faulty appliance might be the reason, switch off and unplug everything on the particular circuit and reset the breaker.

It Maybe A Faulty Manufacturing

There may always be a fault in the manufacturing. It could be the wiring, or the switches, or the conductors used or any of the remaining components that comprise of an MCB wholly. Maybe the use of effective materials as well as productive resources not only help in reducing the production of such MCBs but also eliminate the inefficiency levels within the industry as a whole.

Thus, now that you know why your MCB electrical switch might not work that effectively and efficiently, it is time to stay aware towards the latest technology. Knowing these little things are a basic necessity for the safety and security of your household or place of work.


You are more aware, alert and active when you know how things work. With so many private electrical companies coming up these days, we know how hard it is for you to rely upon anything that gets thrown upon you. The power and energy industry have a lot of scope for new inventions, innovations and changes that define sustainability. It not just brings things more easy towards us, but also makes us more open towards the environment as a whole. Knowing everything isn’t possible, but MCBs are not just a necessity that need full attention, but is a step towards protection of the society as a whole.

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