The full form of MCB is Miniature Circuit Breaker. It’s a type of electronic switch that operates automatically. It can detect an issue within a circuit by identifying the excessive current flow in the circles. If there is a lot of power in the loop, it can break the loop at any time. Fuse boxes are frequently utilised in place of MCBs. However, MCBs are a better alternative because they must be reset by users before they will work again. It is intended to prevent overheating-related issues.
Functions of MCB
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- MCBs are designed to protect against flaws in excessive current and overheating.
- When the current exceeds the set limit, the MCB automatically turns off and the loop is broken.
- To restart the circuit, the MCB must be manually turned on.
- If the circuit overheats, the MCB will trip within 2 seconds to 2 minutes.
Advantages of MCB
- In motor feeders, MCBs of up to 100 amps are employed.
- When compared to fuses, MCB handling is easier for both electrical devices and humans.
- The problematic wire in an MCB is routed from its original location, making fault diagnosis considerably easier.
- It provides a better interface by using a knob.
- Because an MCB may be reused, it is less expensive than a fuse.
- MCB is significantly more currently sensitive.
- To restart it, users must press the button.