6 Advantages of MCB over fuse

Difference between MCB and fuse

MCB i.e. Miniature Circuit Breaker is an automatically operated electrical switch designed to protect the electrical appliances and human beings from electrical shocks and faults.

In normal working conditions of the low voltage electrical network, a rated amount of current flows through the network. When any fault occurs in the network, current exceeds the rated limit. This increased flow of current can cause permanent damage to the electrical appliances. To save these appliances and individuals (operating those appliances) from any burn or damage, this high rated current needs to be interrupted as fast as possible. This is where MCB comes into picture. The MCB detects the excess current flow and immediately breaks the circuit. This can be seen as tripping action of the MCB knob. Previously, this job was done by fuse. These days MCB is more commonly used in low voltage electrical network than fuse.

MCB has several advantages over fuse:

  1. MCB is more sensitive to current than fuse. It detects any abnormality in the current flow and automatically switches off the electrical circuit.
  2. In case of MCB, the faulty zone of electrical circuit can be easily identified. Faulty circuit trips to the off position. On the other hand in case of fuse, the complete fuse wire needs to be checked by opening fuse grip for confirming the faulty zone.
  3. With MCB it is very simple to resume to the supply. You just need to push the knob of MCB back to on position. But in case of fuse, the entire fuse wire needs to be replaced.
  4. MCB provides a better interface with the help of knob than a fuse. In case of fuse the compete handle needs to be taken care out.
  5. Handling MCB is electrically safer than handling a fuse.
  6. MCB is reusable and hence has less maintenance and replacement cost. Whereas a fuse needs to be replaced whenever it goes faulty.
READ ALSO:  Most common home lighting mistakes to avoid

Here are some of the MCB units that we would recommend:


If you are looking for electrician for fuse repair or MCB repair in Delhi NCR, connect with Mr.Right.

You might also like


  1. 1
  2. 2

    am studying electrical , plz teach me how to do installation..am still studying. thanks a lot for that arrival

  3. 3

    I saw you move dissemination box on your site. We are an expert maker of link lug,Crimp Devices ,pvc silicone fiberglass sleeving and other related segments for your requirements. Also, we offer Redid Carry Administration for your custom needs.

    Call me or Email me. How about we talk subtle elements.

    best respects

  4. 4
  5. 5
  6. 6
  7. 7

    Hi There,

    I noticed you sell distribution box on your website. We are a professional manufacturer of cable lug,Crimp Tools ,pvc silicone fiberglass sleeving and other related components for your needs. In addition, we offer Customized Lug Service for your custom needs.
    Give me a call or Email me. Let’s talk details.
    best regards

  8. 8
  9. 9
  10. 10
  11. 11

    madam, i come to know what is MCB and its uses with your answer, thank you. i have one doubt what is the use of a stabilizer for an air conditioner when we are using a mcb switch, can’t it protect the A/C from power up and downs?

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>