Difference Between Isolator and Mcb
Answers were Sorted based on User's Feedback
Answer / gunasekaran
MCB it is operating automatically when load or fault current
exceed the predefined value but isolator is not operating
automatically it is not breaking the load or fault current.
| Is This Answer Correct ? | 120 Yes | 11 No |
Answer / vivek srivastava
Actually Isolator is a manual operating device whereas MCB
works automatically when fault current exceeds the set
value.
| Is This Answer Correct ? | 57 Yes | 4 No |
Answer / sanjay dalvi
Dear all,
Isolator is used to isolate the system during fault from
healthy system.
Mcb it is miniature circuit breaker which is used to
protect the sysem from short circuit,earth fault...it
operates automatically when relay gives the command to
circuit breaker.
| Is This Answer Correct ? | 44 Yes | 6 No |
Answer / nikhil hari
Isolater is used to isolate our devices form Supply. but
there is no protection in isolater. If any fault current
comes our devises or isolater get damaged. Eg: Switch
But MCB is used for circuit protection rather than
isolation.If any fault current comes MCB will trip and
protect or devise.
Different types of MCB's are there B,C,D curve MCB. that
depend up on Instantinous tripping Chara of MCB.
| Is This Answer Correct ? | 26 Yes | 4 No |
Answer / elangkumanan
isolator mean to main switch but mcb means control circuit
fuse that is different to u
| Is This Answer Correct ? | 25 Yes | 4 No |
Answer / chandu
isolator is a operating manual system.
mcb(miniature circuit breaker)is operates automatically
| Is This Answer Correct ? | 15 Yes | 4 No |
Answer / sweety kumari
Isolater is manually operated switch where as circuit breaker is auto operated switch .isolator work on off load condition only for maintenance purpose while circuit breaker is used on onload condition just to make and break the contact .
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / bhabani shankar dash
Isolator means for two one phase & one neutral & mcb stands
for only one phase.
MCB it is operating automatically when load or fault current
exceed the predefined value but isolator is not operating
automatically it is not breaking the load or fault current.
| Is This Answer Correct ? | 12 Yes | 9 No |
Answer / ramanjan
MCB will interrupt flow of fault or excess load current into the circuit under load condition.
Isolator wont interrupt flow of fault current but it is used to disconnect the faulty circuit from healty circuit under noload condition only
| Is This Answer Correct ? | 5 Yes | 2 No |
Answer / akshay jangra
There is not much difference. MCB is used only on LIVE wire which isolates when excess current flows and ISOLATOR is a combined form of two MCBs which isolates LIVE wire as well as NEUTRAL...
| Is This Answer Correct ? | 5 Yes | 2 No |
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