difrent between vcb acb sf6 and mccb breakers

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difrent between vcb acb sf6 and mccb breakers..

Answer / viraj

all are used to protect electrical equipment
in normal conduction all works as close switch but in abnormal condition they become open
vcb acb and sf6 are used with relay
vcb vaccume is used for arc removal
acb air is used for arc removal
sf6 sf6 is used for arc removal
mccb molded case circuit breaker to limit current

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