This article covers molded case circuit breaker (MCCB) working /operating principle, its different parts and their functions, and labeled circuit diagram. MOLDED CASE CIRCUIT BREAKER Circuit breakers are electrical devices that offer protection against fault current. They use different medium to safely extinguish the arc such as air, oil, SF6 or vacuum etc. MCCB or Molded Case Circuit Breaker uses air as the dielectric medium to break a circuit. Air has a low dielectric strength as opposed to other mediums that is why it is used for protection in low voltage circuits. Molded Case Circuit Breaker or MCCB is an automatic electrical device. It is ... Learn how to choose the right MCCB based on load, rating & application. Explore expert tips & trust BCH Electric for high-quality MCCBs in India. Learn about the different types of molded case circuit breaker ( MCCB ) used for low tension (LT) distribution and feeder panels. Find out the supply, pole, breaking capacity, operation, utilization and protection release types of MCCB .
