Miniature circuit breaker MCB Overload protection: If the circuit is overloaded for a long time, the bi-metallic strip becomes overheated and deformed.This deformation of Bi-metallic strip causes, displacement of latch point. The moving contact of the MCB is arranged by means of spring pressure, with this latch point, that a little displacement of latch causes, release of spring and makes the moving contact to move for opening the MCB. . . . . . . . #powersupply #power #powerelectronics #poweren