What is MCB ? Why it is convenient over fuse?

Explanation

### Step-by-Step Solution:

**Step 1: Define MCB**
- MCB stands for Miniature Circuit Breaker. It is an electrical device that automatically switches off the electrical circuit when it detects an overload or a short circuit.

**Step 2: Function of MCB**
- The primary function of an MCB is to protect electrical circuits from damage caused by excess current. When the current flowing through the circuit exceeds a certain threshold, the MCB trips or disconnects the circuit, preventing potential hazards such as overheating or fire.

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