text: An Miniature Circuit Breaker is an automatically operated electrical switch. Miniature circuit breakers are intended to prevent damage to an electrical circuit as a result of excess current. They are designed to trip during an overload or short circuit to protect against electrical faults and equipment failure. They are highly popular and are used extensively in domestic and industrial circuits. For domestic usage it can be used to power light switches, cieling fans, heaters, air conditioners etc In industrial application tey are used for powering extensive circuits within a machine panel, LV Panels. MCBs are designed to work directly within a distribution board or parent machine.