What is MCB Full Form, Meaning, Stand for, And Definition

Are you looking for The meaning and full form of MCB And what does MCB stand for? Well, We are going to learn about the definition and meaning of MCB, the abbreviations of MCB acronyms, and MCB meaning in Hindi. So you should read this post till the end?

The Full Form of MCB – Miniature Circuit Breaker

MCB Stands for Miniature Circuit Breaker. MCB is a power-sensitive electronic used in high-current applications to provide a high degree of overcurrent protection. In simple terms, MCB is a special type of fuse that is smaller than a normal fuse. an MCB is a switch that protects the entire circuit and other electronic home appliances such as a light bulb, radio, fridge, or another similar device.

MCB circuit breaker that is much smaller than a standard breaker size, such as 14-20 amp or 20-30 amp. This type of breaker is commonly used in circuit boxes that are difficult to access, such as in the attic, or in areas of a house that do not have an electrical panel. Miniature Circuit Breaker has no effect on a standard breaker box. They are simply a smaller, more compact option.

How Does Work MCB

MCB is an automatic electronic switch that functions or works like a fuse. When the amount of current in a circuit becomes too high, the MCB automatically shuts off, which can prevent short circuit damage to the electrical circuit. After a while, we can start it again. There are many types of components used To assemble a Miniature Circuit Breaker (MCB) that as follows-

  • Body
  • Plunger
  • Load Terminal
  • Arc Chamber
  • Tripping Lever
  • Fixed Contact
  • Operating Knob
  • Supply Terminal
  • Magnetic Element
  • Operating Mechanism
  • Bi-Metallic Strip

What is Tripping in MCB

There are two types of tripping inside MCB. Which is known as Over Load Current Tripping and Short Circuit Tripping, Due to this tripping function, it shuts down in case of overload. But for both these tripping, two different components are installed in MCB.

  • Over Load Current Tripping

The Bimetal Strip used in MCB is made by mixing two metals. When a load of current on the MCB increases, one metal expands more than the other,

Due to this, it becomes Bimetal Strip Bend. And it pulls the Tripping Lever with it. Due to this the MCB trips and the transmission of electricity in the electrical circuit stop before a short circuit occurs.

  • Short Circuit Tripping

Any equipment in the electrical circuit is tripped by this type of MCB, even if there is no fault. It is based on the principle of a magnetic field. Inside the Short-Circuit Tripping is a solenoid coil.

When a short circuit occurs in the solenoid coil, a large number of magnetic fields are produced.
The Plunger inside it is being pushed forward. As a result, the Tripping Lever can be used for more than just this push and MCB trips.

Types of Miniature Circuit Breaker (MCB)

  • Type B MCB

This type of MCB tripping takes place between 3 to 5 full load currents. B Type MCB is used in residential and light commercial applications, as well as PLC wiring with very low-pressure loads, and computer and electronic equipment.

  • Type C MCB

Type C MCBs have a full load current of 10 amps. As a result, it trips when a current of 50 to 100 ampere passes through it.

  • Type D MCB

Type D MCBs have a full load current of 10 amps. As a result, it trips when current flows between 100 and 200 amperes.

  • Type K MCB

Type D MCBs have a full load current of 10 amps. As a result, it trips when a current of 100 to 150 amperes passes through it.

  • Type Z MCB

Type D MCBs have a full load current of 10 amps. As a result, it trips when 20 to 30 amps of current pass through it.


MCB is used as an acronym to represent Miniature Circuit Breaker. now you might have got some idea about the abbreviation, acronym, Full form, and meaning of MCB. But, There Are some Most Using Full-Form and meaning of MCB acronyms and abbreviations listed in different categories below the table.

MCBMolecular and Cellular Biology
Academic » Biology
MCBMolecular and Cell Biology
Academic » Biology
MCBMain Course Book
Academic » Students
MCBMulti Customer Briefing
Computing » IT
MCBMovement Control Battalion
Governmental » Military
MCBMobile Command Base
Governmental » Military
MCBMemory Control Block
Academic » Electronics
MCBMarketing and Consumer Behavior
Business » Marketing
MCBMarine Corps Base
Governmental » Military
MCBMain Control Board
Academic » Electronics
MCBMetropolitan Commercial Bank
Business » Banking
MCBMiniature Circuit Breaker
Academic » Electronics
Full-Form of MCB

What is the FAQs and the meaning of MCB?

In the above article, we have discussed the Full Forms of MCB, their meaning, and their definition. Now we are going to discuss some FAQs that are frequently asked on the internet. So there are many FAQs on What does MCB means. let’s explore some of them.

  1. What is the full form of MCB in electronic?

    The Full Form of MCB is Miniature Circuit Breaker. The Definition of MCB and all possible meanings are given above, You might also like some similar terms related to MCB.

  2. What does MCB stand for?

    MCB stands for Miniature Circuit Breaker. But there may be more than one meaning of MCB, so check out all meanings of MCB in the Above post section.

  3. What does MCB mean?

    MCB is an acronym that means Miniature Circuit Breaker. you can read Most used MCB Full Form Meaning. check out related information in the above section.

  4. What is the MCB Meaning in Hindi

    The MCB meaning in Hindi is लघु सर्किट ब्रेकर. It may be more than one Meaning of MCB so check out one by one in the above section.

  5. MCB ka full form in Hindi

    MCB ka full form in Hindi is लघु सर्किट ब्रेकर. It has many other Full Forms there are listed Above.

  6. What is the acronyms and abbreviation of MCB?

    MCB is an acronym for Miniature Circuit Breaker. The Definition & Meaning of MCB in Different Categories discussed above.

In this post, we discussed all the important things about What is the meaning of MCB. You will not only get all the possible MCB Full Form & Meaning. But also all popular full forms list, acronym, abbreviation and their meaning and definition.

Online Full Form is a website to providing you popular full forms, meaning, abbreviations, and acronyms related to computer, electronics, science, finance, information technology, chemistry, biology, business, organization, Digital marketing, and chat slang. Let's learn, and improve your knowledge! if you find any mistake related to acronym, abbreviation, or meaning then kindly contact us.