What’s the deference between MCCB, VCB, and ACB?

MCCB is stands for Moulded
Case Circuit Breaker.

ACB is stands for Air Circuit Breaker.

VCB is stands for Vacuum Circuit Breaker.

The moulded case circuit breaker
which use ark quenching device as
AIR which is used up to 500 Amps only.

The Air Circuit Breaker which use
quenching device as air and
used up to 3000 Amps at
415 volts.

The Vaccum Circuit Breaker which use ark quenching device as a vaccum and used for 415 volts.6.6 KV,11 KV,33 KV,132 KV,220 KV also.

Thermomagnetic operation-For large
surges in ct- In distribution
boards-bimetallic strip
responding to less extreme but
longer_term over_current
conditions-applicable for low voltages.

Low volt power cb-trip
characteristics r adjustable-airs the arc quenching medium
applicable up to 440V.

Medium volt power cb-trip char. Adjustable-mechanical sys. used for trip & open-Vacuum s the arc quenching medium-applicable up to 36kV.

MCCBs the used low rating Lt pannel.

ACBs the used high rating Lt pannel.

VCBs the used high rating Ht pannel.

MCCB is used for load purpose and
is should used up to 1200-1500A only.

ACB is used for low tension (LT)
panel it should carry up to
4000A and more.

VCB is used for high tension (HT) panel it means carry 11KV and low amps rating it can withstand at long time at high Voltage also.