In the realm of solar power systems, Moulded Case Circuit Breakers (MCCB) play a crucial role in ensuring the safety and reliability of photovoltaic (PV) circuits. These breakers are designed to protect electrical circuits from damage caused by overloads and short circuits, making them essential components in PV systems.

    MCCBs are a type of low-voltage circuit protection device enclosed in a moulded case. This casing not only provides mechanical protection but also acts as an insulator, reducing the risk of electric shocks. The breakers themselves are designed to trip, or disconnect the circuit, when the current exceeds a preset limit. This tripping mechanism is crucial in PV systems, as it helps prevent damage to solar panels, inverters, and other components caused by excessive currents.