MCB or a circuit breaker is an automatic electrical switch that helps to protect an electrical circuit from damage by excess current, typically resulting from an overload or short circuit. Its basic function is to interrupt current flow after it detects a fault.
Type C MCB will trip instantly at a rate of five to ten times its rated current. These are normally useful for high inductive loads where switching surges are high such as small motors and fluorescent lighting. In such cases, type C MCBs handle a higher value of short circuit currents. Therefore, these are suitable for highly inductive commercial and industrial installations.