A Molded Case Circuit Breaker (MCCB) is an electromechanical device designed to protect electrical circuits from overload, short circuits, and faults. It consists of a sturdy molded insulating housing that encloses the trip unit, contacts, and arc extinguishing mechanism.
1. Adjustable Trip Settings – Allows customization of overload and short-circuit protection.
2. High Breaking Capacity – Can interrupt high fault currents safely.
3. Thermal-Magnetic Operation – Uses a bimetallic strip for overload protection and a solenoid for short-circuit protection.
4. Versatile Applications – Used in industrial, commercial, and large residential electrical systems.
Advantages:
- Reliable protection for equipment and wiring.
- Resettable, unlike fuses.
- Compact and durable design.
MCCBs are essential for ensuring electrical safety and preventing damage to circuits and connected devices.