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What is the Full Form of MCB?

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MCB full form

The full form of MCB is Miniature Circuit Breaker. As the long form suggests, MCB is a type of electronic switch that functions automatically. By simply identifying the amount of current flow in a particular circuit, the MCB can easily detect a problem in the circuit. Therefore, if it suspects a significantly large amount of power at any point in time, it will automatically break the loop to prevent unforeseen circumstances. Although many people prefer fuses over MCBs, the latter is a better option since the user has to manually reset it once it goes off, making it a safer option. 

Also Read: What is the Full Form of MPCB?

What are the Types of MCBs?

MCBs are generally classified into the following categories:

  • Type A: This type of MCB trips off the circuit if the current exceeds 2-3 times the actual flow. 
  • Type B: This type trips off if the current exceeds 3-5 times the usual current flow. It is commonly used in low inrush load.
  • Type C: Type C trips off when the flow increases 5-10 times. It is commonly used in transformers, pilot devices, and fluorescent lighting. 
  • Type D: It trips off between 10-20 times and is generally used in high inrush current flow. Type D is more common in X-ray machines and winding machines.
  • Type K: When the current flow is 8-12 times more than usual, Type K MCB will trip off automatically. It is a perfect option for high inrush power and heavy motor loads. Moreover, it is equipped with a high-sensitivity thermostatic bimetal tip.

Also Read: What is the Full Form of PCB?

Advantages of Using MCB

The advantages of using MCBs include:

  • They are budget-friendly as one can reuse them over and over again.
  • MCBs offer better interference than other similar options. 
  • Up to 100 amps of MCB can be used in motor feeders. 
  • MCBs are safer than fuses. 
  • It ensures equal electrical distribution among the different electrical devices.   
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We hope this has helped you understand the MCB full form and everything related to it. If you want to know more, find the general full forms list on our blog. In the world of short forms, you can rely on the Leverage edu page to know about more important full forms like this! Connect with us study abroad experts to achieve your international dream today!

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