Which device automatically disconnects current during overload?

The device that automatically disconnects current during an overload is an MCB (Miniature Circuit Breaker).

An MCB continuously monitors the current flowing through a circuit. When the current exceeds the safe limit due to overloading or short circuit, it trips automatically and breaks the circuit.

This immediate disconnection:

• Prevents damage to electrical appliances
• Protects wiring from overheating
• Reduces the risk of electrical fires

Unlike traditional fuses, an MCB can be reset after tripping, making it a more efficient and user-friendly safety device.