Low-voltage circuit breaker is a common protection device in power system, which is used to detect and protect electrical equipment from overload, short circuit and other faults in the circuit. According to different application scenarios and functional requirements, low-voltage circuit breakers can be divided into many types. This paper will introduce the low voltage circuit breaker in detail, and reveal its different types and functional characteristics.

1. Air circuit breaker

air circuit breaker is a common low-voltage circuit breaker, which uses air as the arc extinguishing medium and has sensitive overload and short circuit protection functions. Air circuit breakers are divided into two types with electrical air chamber and non-charged air chamber, which are suitable for different circuit environments and load characteristics.

2. Fused circuit breaker

the fused circuit breaker is a low-voltage circuit breaker that realizes overload protection through a fuse. When an overload occurs in the circuit, the fuse will fuse and cut off the circuit, which plays a role in protecting equipment and personnel. Fused circuit breakers are suitable for occasions where there are strict requirements for overload protection.

3. Magnetic circuit breaker

magnetic circuit breaker is a low-voltage circuit breaker that uses electromagnetic principle to realize short-circuit protection. When a short-circuit fault occurs in the circuit, the magnetic circuit breaker will quickly cut off the circuit to protect the equipment from damage. The magnetic circuit breaker has the advantages of fast action and high reliability.

4. Type type circuit breaker

model type circuit breaker is a kind of low-voltage circuit breaker designed according to different load characteristics and rated current, including C- type, D-type, K-type and other different models. Different types of circuit breakers are suitable for different load characteristics and short-circuit protection requirements, and can provide accurate circuit breaker protection.

5. Leakage circuit breaker

leakage circuit breaker is a low-voltage circuit breaker specially used to detect and protect leakage faults, which can cut off the circuit in time to avoid the danger of electric shock caused by leakage. The leakage circuit breaker is suitable for places with high requirements for personnel safety, such as homes, offices, etc.

6. combined circuit breaker

the combined circuit breaker is a low-voltage circuit breaker that combines a fuse and a magnetic circuit breaker. The combination of the fuse and the magnetic trigger realizes double protection against overload and short circuit faults. The combined circuit breaker has high safety performance and reliability.

7. Intelligent circuit breaker

intelligent circuit Breaker it is a low-voltage circuit breaker integrated with intelligent control and monitoring functions, which can realize remote monitoring, fault diagnosis, data recording and other functions, and improve the efficiency of circuit management and maintenance. Intelligent circuit breakers are suitable for occasions where there are strict requirements on the operating state of the circuit.

As an important protection equipment in power system, low-voltage circuit breaker can be divided into many types according to different application requirements and environmental characteristics, including air circuit breaker, fuse circuit breaker, magnetic circuit breaker and so on. Different types of circuit breakers have different protection functions and scope of application, which can meet the protection requirements of various circuits.