mcb (miniature ckt. breaker) is used for low current
ranges, avaiable uo to 63A
mccb (miniature current ckt breaker )is used for medium
current ranges up to 800 A
acb (air ckt breaker)is used for more higher ratings.
MCB - Miniature circuit breaker is used from 1A to 100 Amps
rating. which is only magentic tripping device
MCCB - Moulded circuit breaker is used from 32amps to
1600amps ( combination of both thermal and magentic
ACB - Air circuit breaker is used from 630amps to 5000amps
capacity - in older version only thermal tripping only. now
a days it is combination of both thermal and magnetic
what's the meaning of the negative going half cycle in the
circuit containing a bulb and a switch in series with a
input ac source.
i mean what happens in the -ve cycle.
the dir. of current changes or any other thing.
if dir. changes then why we use fuse in only phase wire.