Difference Between MCB & MCCB

MCB V/S MCCB

MCBs area unit miniature circuit breakers with optimum protection facilities of overcurrent solely. This area unit factory-made for fault level of up to 10KA solely with the in operation current vary of zero.5 to sixty-three Amps (the ranges area unit fixed), single, double and 3 pole version. These area unit used for smaller masses -electronic circuits, house wiring etc.

MCCBs square measure Moulded case Circuit breakers, with protection facilities of overcurrent, earth fault. it’s a variable vary of fifty to 100 percent operational current. They can be wired for remote also as native operation each. They are factory-made for fault levels of 16KA to 50KA and operational current vary of 25A to 630Amps. They are used for application connected with larger power flow demand.

The main difference between MCB and MCCB is the current ratings.

MCB – Used for Applications which requires less than 100A.

MCCB – Used for Applications which requires less than 1000A.

Moulded Case Circuit Breaker (MCCB)

The MCCB stands for the wrought case electrical fuse. it’s a protection device that protects the circuit from overloading. it’s primarily utilized in an area wherever adjustable tripping needs. the present rating of MCCB is up to 2500 amps. it’s primarily used for top current applications. The MCCB features an operated by hand switch for tripping the circuit.

The MCCB has 2 arrangements. One for the kitchen appliance temperature and therefore the alternative for the overcurrent. It consists of bimetallic contact that expands and contracts once the temperature of the MCCB changes.

During the traditional operational conditions, the contact permits the present to flow through the circuit. however because the current rises on the far side the predefined worth, then their contacts can heat and expand till the contacts square measure open. Thus, disconnected the circuit from the most offer and protects the instrumentality from injury.

Miniature Circuit Breaker (MCB)

The miniature breaker is an associate mechanical device that, mechanically, turn off the circuit whenever the abnormality happens. It simply senses the overcurrent caused by the tangency.

The regulation of the miniature circuit is incredibly easy. Their main operation is to shield the instrumentality from overcurrent. it’s 2 contacts one is movable, and therefore the alternative one is mounted. once this will increase from the predefined limit, their movable contacts are disconnected from the mounted contacts that create the circuit open and disconnects them from the most offer.

The MCCB has 2 arrangements. One for the kitchen appliance temperature and therefore the alternative for the overcurrent. It consists of bimetallic contact that expands and contracts once the temperature of the MCCB changes.

During the traditional operational conditions, the contact permits the present to flow through the circuit. however because the current rises on the far side the predefined worth, then their contacts can heat and expand till the contacts square measure open. Thus, disconnected the circuit from the most offer and protects the instrumentality from injury.