What is the Difference Between MCCB & ACB & VCB
Answer Posted / senthil kumar
MCCB,ACB,VCB all the three are protective devices only.
They are used to isolate the system which is connected
below them at fault conditions. Eg, Overload, Short
circuit,Earth fault.
Depending upon the operating voltages and level of
protection(Fault Level) needed for the system ,these three
protection device are selected.
For Eg: If the operating voltage are below 1100V, depend
upon the fault level we can use MCCB or ACB.
Simillarly if operating voltage are more than 1100V,VCB are
used.
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