Miniature : Circuit breakers are used in residential and light commercial installations. Miniature circuit breakers are commonly used to protect and control the electrical supply to respective electrical circuits of the building. Miniature circuit breakers often are single pole breaker and are installed in a cabinet. MCB typically include an electrical contact mounted on a movable contact carrier which rotates away from a stationary contact in order to interrupt the current path. Such circuit circuit breakers have molded insulative housings of standard dimensions sized to interchangeably plug into or bolt onto panel board. Typically, there is a fixed contact attached to the housing and a movable contact coupled to an operating mechanism. The operating mechanism includes a movable handle that extends outside of the housing, the handle has essentially three stable positions: on, off, and tripped. CLICK:- MCB in English These three positions tell the operator what condition th...