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1.what is the difference between MPCB and MCB ?
2.what is the difference between MPCB and MCCB ?
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Answer Posted / saroj kanta nayak
1.Both MCB and MPCB protects against Short circuit and Over load. But MPCB is better for the more starting current taken by Motor. and the Current range can be ardjusted. In mcb we cannot ardjust the current.
2.Both MPCB and MCB protects against Short circuit and over load. But the main difference is MCCB have NO & NC contact built in which used for the control circuit. untill and unless MCCB made on control circuit cannot made on(for motor starter feeder) In camparision to MCB, MCCB have higher current rating. And if current rating increases ACB(air circuit breakers used).
So in conclusion All MCB,MCCB & MPCB gives the same protection even can be used in any others place. But MPCB is best for MOTOR protection as it have Inbuilt OVER LOAD RELAY and current range can be selected. Others(MCB&MCCB) may give trouble of unnecessary tripping during starting of motors.For short circuit protection all devices like MCB,MCCB&MPCB functions similar way.
Saroj kanta Nayak
SIEMENS LTD.
KALWA,MUMBAI
Masters In technology from
Nation Institute of technology, Silchar.
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