MCCB is called molded case circuit breaker, mainly because of its structure and construction characteristics.
1. Origin of the name
MCCB: The full name is Molded Case Circuit Breaker, that is, molded case circuit breaker.
Mould case: refers to the fact that all parts of the circuit breaker are sealed in a plastic shell. This plastic shell not only plays an insulating and protective role, but also makes the structure of the circuit breaker more compact and beautiful.
2. Structural characteristics
Sealing: Since all parts are sealed in the plastic shell, the MCCB has good sealing, which can prevent external factors such as dust and moisture from affecting the internal mechanism of the circuit breaker, thereby improving its service life and reliability.
Compactness: The structure of the molded case circuit breaker is compact, occupies little space, and is easy to install and maintain.
Manual operation: Manual operation is mostly used, allowing users to easily control the on and off of the circuit.
3. Functions and applications
Protection function: MCCB can automatically cut off the circuit in the event of overload or short circuit, thereby protecting the safe operation of electrical equipment and power systems.
Widely used: Due to the above advantages, MCCB is widely used in residential, commercial and industrial buildings to protect the normal operation of power systems and the safety of equipment.
MCCB is called a molded case circuit breaker because all its components are sealed in a plastic shell. This structural feature makes it have the advantages of sealing, compactness and manual operation, and can provide overload and short-circuit protection.