Electrical systems rely heavily on switchgear devices to protect circuits and ensure safe operation. Among the most common switchgears are Molded Case Circuit Breakers (MCCB) and Air Circuit Breakers (ACB). Choosing the right device impacts system reliability, safety, and cost. This post compares MCCB and ACB switchgears, explaining their differences, applications, advantages, and limitations. It also explores cost benefits when using MCCB combined with contactors instead of