Answer / jigs

MCCB-moulded case circuit breaker; ACB-Air circuit
breaker;VCB-vacuum circuit breaker.
Well they all the diff kind of design. Their operating
range is also different.

Answer / rsundareee

MCCB-moulded case circuit breaker,
ACB-Air circuit breaker,
VCB-vacuum circuit breaker,

MCCB - We can use up to 800A in low voltage side(LV)
ACB - We can use From 800A and above in low voltage side
(LV)
VCB -We can use HV side only,It is all the diff kind of
application and design

Answer / santhosh

mcb is low capcity ,acb is high,vcb control sprk high
volteg

Answer / nagaraj

MCCB is mouded case circuit breaker this is LV, 40-1600A
MCC is miniture circuit breaker this is LV, 5 to 100A
ACB it is air circuit breaker this is LV up to 800 to 6300A
VCB it is vacum circuit breaker this is HV applications

pls send me some question and answer for rrb railway interviw related 2010

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