Difference Between MCB and MCCB

What Are MCB and MCCB?

Most of the people get confuse in differences between MCCB and MCB. we see that in given below all concept about MCB and MCCB.

MCB:

MCB stands for Miniature Circuit Breakers. The MCB easily senses the overcurrent caused by the short circuit. The miniature circuit has a very straightforward working principle. The MCB is an electromechanical device that switches off the circuit automatically if an abnormality is detected. It has two contacts one is fixed and another is movable.
Difference Between MCB and MCCB


MCCB:

On the other hand, MCCB is an abbreviation for Molded Case Circuit Breaker.t has a switch that is operated manually for tripping the circuit. The MCCB is a protective device protecting the circuit from overloading. The device features has two arrangements, one for the overcurrent and another for the over-temperature. Moreover, the MCCB consists of bimetallic contact, which contracts and expands when the MCCB temperature changes.

Difference between MCB and MCCB:

CharacteristicsMCBMCCB
Rated currentRated current is not more than 100 amperes.The range of rated current us up to 1000 amperes
Trip characteristicsNormally, trip characteristics are not adjustableTrip current may be adjusted
OperationThermal/thermal-magnetic operation.Thermal/thermal-magnetic operation
Interrupting capacity10kA10kA-100kA
Operating current range0.5A to 6.3 A25A to 65A
LoadsmallLarge
Under voltage tripNoYes
Shunt tripNoYes
Auxiliary AlarmNoYes

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