MCB Full Form

What is the Full Form of MCB?

The Full Form of MCB is Miniature Circuit Breaker. It is an electric switch that works automatically to detect excessive current flow in a circuit. On detection of the extra current flow, the MCB works to cut the current off as soon as possible. 

MCBs replaced the use of fuse in circuits due to its accessibility and safety factor. After a short circuit, the MCB does not need to be replaced, unlike the fuse. You have to reset the MCB for it to work again.


The Safety Quotient of an MCB:

MCBs are more sensitive to the overflow of current. In low voltage networks, it automatically detects the overflow immediately and restores supply immediately. While fuses need to be rewired, MCBS does not have that hassle. It does not lag when the need is high to break the circuit, preventing severe accidents.


Some Marvelous Features of the MCB:

The fast-acting BCMs have a wire that trips off when any fault arises. It makes it easier to detect faults. Its use of a knob ensures a better work process. It secures safety for human use and to the health of the electric device. MCB is a smart choice of usage as they are reusable, which makes it a cheap product. You don't have to spend lots of money on its maintenance.


The Working Mechanism of the MCB:

A chain of reactions is lined together for the MCB to work. As you have read, the MCB has a bimetallic wire. This metal wire collapses in case of a current overflow or overheating issue. This, in return, opens up a latch that is connected to the operating mechanism. This then opens the MCB, and the MCB shuts off the circuit. It hardly takes a time of 2 seconds to complete the whole action.

After the process is completed, manual help is required for the MCB to start functioning again. Just switch it on to reconnect it with the power supply.


Types of MCB:

The MCB comes in 6 different varieties, namely A, B, C, D, K, and Z. While Type A of MCB is best suited for semiconductor devices, the Type C MCB poses as the best choice for domestic uses. 


Knowing About the Advantages of the MCB:

You must now be wondering about the advantages of using an MCB? Let us jot a few of the advantages for you:

  • The first advantage is that you don’t need to invest in them a lot. They are reusable and are cheaper

  • Being more sensitive to current, it can detect faults as quick as a heartbeat. 

  • It makes it very clear for you to identify the exact location of the fault

  • It has better usability than a fuse. It simply uses a knob to reattach itself to the current supply.

Keep these in mind and choose the best MCB for your electric circuit.

FAQ (Frequently Asked Questions)

Q: What is an MCB?

A: The Full Form of MCB is Miniature Circuit Breaker. It is placed in a circuit to detect an overflow of power and heat. After it detects such a situation, it immediately shuts off the circuit.

Q: How to Reuse MCB?

A: You simply need to switch the MCB on to get its functioning going after a short circuit. It uses a knob for reattaching itself to the current.

Q: Are MCBs Safe?

A: MCB is a 100% safe product to use. They are more sensitive to current overflow, thus acts quickly to shut off the circuit. Since they are reusable, it becomes light of your budget as well.