A circuit breaker is an automatic electrical switching device that is mainly used to protect equipment and lines in electrical systems from hazards caused by faults such as overload, short circuit, and leakage. It can automatically cut off the circuit when a fault occurs to avoid equipment damage or personal injury. Circuit breakers have a variety of uses depending on different occasions and needs. The following are some of the main application areas and functions:
Typical application types of circuit breakers:
Miniature circuit breakers (MCB): used in household circuits and small commercial places to provide overload and short circuit protection.
Residual current circuit breakers (RCD/RCBO): provide leakage protection and are commonly used for personal safety protection in homes and industries.
Air circuit breakers (ACB): suitable for medium and high voltage power systems, widely used in industrial facilities, power stations and substations.
Molded case circuit breakers (MCCB): used for medium current protection, commonly found in large commercial and industrial power systems.
High voltage circuit breakers: used in power stations and transmission lines to provide high voltage and high current protection.
In general, circuit breakers have a wide range of uses, covering various fields from homes to industries, commerce and power systems, and can effectively ensure the safety and reliability of electrical equipment.