motor protection circuit breaker

- May 29, 2018 -

Motor protection circuit breaker or MPCB is a specialized electromechanical device that can be used with motor circuits of both 60 Hz and 50 Hz.It has several functions that allow it to provide a safe electrical supply for motors:

●Protection against electrical faults such as short circuit, line-to-ground faults and line-to-line faults, MPCB can interrupt any electrical fault that is below its breaking capacity;

●Motor overload protection, when a motor draws electric current above its nameplate value for an extended period of time, overload protection is normally justable in MPCBs;

●Protection against phase unbalances and phase loss, both conditions can severely damage a three-phase motor, so MPCB will disconnect the motor in either case as soon as the fault is detected;

●Thermal delay to prevent motor from being turned back on immediately after an overload, giving the motor  time to cool down;