The MCCB is used as a protection device in Power Distribution. This Circuit Breaker is an electromechanical device which guards a circuit against short circuit and overcurrent. They offer short circuit and overcurrent protection for circuits ranges from 63 Amps-3000 Amps. The primary functions of MCCB are to give a means to manually open a circuit, automatically open a circuit under short circuit or overload conditions. In an electrical circuit, the overcurrent may result from faulty design
The MCCB is an option to a fuse since it doesn’t need an alternate once an overload is noticed. Unlike a fuse, this circuit breaker can be simply reset after a mistake and offers enhanced operator safety and ease without acquiring operating cost. Generally, these circuits have thermal current for overcurrent and the magnetic element for short circuit release to work faster.
The characteristics of an MCCB mainly include the following
- The range of rated current us up to 1000 amperes
- Trip current may be adjusted
- Thermal/thermal-magnetic operation
Welcom to Factomart’s information center about the Molded Case Circuit Breakers MCCB. We will discuss the usage of MCCB, especially in the commercial and industrial site. How to properly select and size the correct MCCB. If you wish to check the MCCB prices and availability please visit our MCCB section of our online shop
This is when a Protection Relay; a sensor that detects a particular electrical fault such as Over Voltage, Under Voltage, Phase lost, Phase Sequence, Earth Leakage, etc., and send a relay signal to the MCCB such that it trips the circuit.